Diamond's Edge Wedding & Events
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"Choosing Great Diamond Island for our wedding was the best choice we could've made!! Colleen and her..."
"If you’re considering The Inn at Diamond Cove as your wedding venue — book it. We had a 200+ person..."
About this venue
About
Diamond’s Edge Restaurant & Marina is a waterfront wedding venue located on Great Diamond Island in Portland, Maine. Set within historic Fort McKinley and surrounded by sweeping water views, lush forests, and quiet island charm, this coastal destination offers couples a one-of-a-kind setting for their celebration. Accessible by a short ferry ride from Portland, it feels like a private retreat—perfect for couples dreaming of a scenic and serene Maine wedding. The venue is open for events from late May through early October.
Unique Wedding Weekend Experience
What makes Diamond’s Edge truly special is the ability to turn your celebration into a full wedding weekend getaway. With an exclusive buyout of the nearby Inn at Diamond Cove, you and your guests can stay on the island together and enjoy it as your own private escape. Spend the weekend exploring the historic grounds, relaxing by the pool, kayaking in Diamond Cove, hosting welcome parties, rehearsal dinners, farewell brunches, and more. It’s a destination wedding—without leaving Maine.
Facilities & Capacity
Diamond’s Edge offers several beautiful spaces to suit celebrations of all sizes:
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Oceanview Lawn: A stunning waterfront location perfect for ceremonies and outdoor receptions, accommodating up to 215 guests.
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Custom Sperry Tent: Featuring retractable sides and a built-in dance floor, this tent allows for an elegant outdoor event in any weather.
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Art Gallery: Ideal for intimate weddings and gatherings of up to 60 guests, with 40-foot vaulted ceilings and sliding barn doors that bring rustic charm to your celebration.
Couples may also choose to end the night with a private boat cruise back to Portland or stay steps away at the Inn at Diamond Cove.
Services Offered
Diamond’s Edge Restaurant & Marina is a full-service wedding venue providing:
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Dedicated wedding specialist
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On-site catering with coastal-inspired menus
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Full bar service
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Champagne toast
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Coffee and dessert service
On-Island Accommodations at the Inn at Diamond Cove
Couples hosting their wedding at Diamond’s Edge may also offer on-island accommodations at the nearby Inn at Diamond Cove. Options include a full Inn buyout for exclusive weekend access or reserving a limited number of rooms for guests. Staying on island allows for a seamless wedding weekend experience with access to resort-style amenities such as a pool, beaches, kayaking, sports courts, and multiple gathering spaces—ideal for welcome events, farewell brunches, and extended celebrations.
Experience
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18 years in business
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We speak English
FAQ
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Reviews of Diamond's Edge Wedding & Events
Review summary
The Inn at Diamond Cove on Great Diamond Island is highly praised by multiple reviewers for providing a unique, magical, and unforgettable wedding experience. The staff, including Colleen and Amber, are described as incredibly helpful, communicative, and dedicated, making the planning process smooth and stress-free. Guests appreciated the breathtaking setting, delicious food, impeccable service, and attention to detail that made the weddings stand out as memorable and beautiful occasions. The full buyout option created a private and special atmosphere, while the island experience added a sense of relaxation and exclusivity to the events.
Above and beyond
The Inn at Diamond Cove (Full Buyout, 200+ Guests)
From the very beginning, they were professional, responsive, and truly invested in making sure everything went smoothly. We weren’t planning a simple “show up and get married” day — our wedding involved a ton of coordination, and their willingness to work with us on the details made a massive difference in our overall experience.
We did a full buyout of the inn, and it was hands-down one of the best decisions we made for our wedding weekend. It gave the entire event a private, elevated feel — like we had our own little world for the weekend.
Having our friends and family staying on-site created such a fun, connected atmosphere and made everything easier:
*Guests didn’t need to worry about commuting
*People could relax and stay in “wedding mode”
*The entire experience felt seamless and special
We also hosted our afterparty at the inn, and it was honestly the perfect ending to the night. It was fun, effortless, and convenient — and we loved being able to keep the celebration going without needing to move everyone to another location.
It felt like the venue was designed for exactly this kind of wedding experience: a big celebration, done beautifully, without unnecessary hassle.
If you’re planning a wedding that’s large, detailed, or logistically complex, you want a venue that can truly execute — and The Inn at Diamond Cove absolutely can.
We are so grateful we chose them and would recommend them a thousand times over.
Photography by @claytaylorphotography
Amazing Wedding! Five Stars
What truly sets this venue apart is the island experience. Many of the guests stayed on the island at the Inn at Diamond Cove, which made the entire weekend feel like a destination getaway rather than just a wedding. It was perfect—relaxing, beautiful, and incredibly memorable.
The ferry ride from Portland is only about 30 minutes, making it easy and convenient while still feeling like a true escape. The combination of the stunning setting, exceptional service, and unforgettable atmosphere made this one of the best weddings I’ve ever attended. I would highly recommend Diamond’s Edge to anyone looking for a unique, magical wedding experience.
Hidden gem in Casco Bay
Stepping off a classic Casco Bay Ferry onto the dock, you are immediately transported away from the hustle and bustle of everyday life into an iconic scene of Coastal Maine tranquility (and away from cell service!) No cars are allowed on the island, resulting in a truly relaxed island experience. History buffs also have the chance to explore historic Fort McKinley - a highlight we didn’t appreciate until after the fact. Whether your guests stay at the Inn at Diamond Cove, a vacation rental, or visit for the day, it will surely be an experience they won’t forget.
The venue itself was remarkable on every front. The scene of a tent reflecting on the ice pond is stunning, only exceeded by the view our guests were treated to with the cove in the background during the ceremony The culinary experience was exceptional, and it was an absolute treat getting to choose from their diverse and rich options for appetizers, entrées, and drinks. But what sealed the deal was the amazing staff of the restaurant, marina, and inn. Their willingness to go the extra mile, find solutions, and focus on the details was so assuring, only exceeded by their commitment to Andrew & I savoring every moment on our wedding day. Thank you, Colleen, Erik, Trent, Crystal, and your whole team!
Perfect spot for a wedding
Quintessential Maine Wedding
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Team
Professional Network & Endorsements
We couldn't have asked for a better experience working with the friendly wedding coordinators and staff at Diamond's Edge Restaurant and Marina this summer. Leading up to wedding day, Rachel was extremely helpful with many logistical questions and on the day of, was just as amazing. The view is gorgeous and the transportation to the island was seamless. It was a wonderful experience to play on the island and we look forward to going back. We highly recommend a Great Diamond Island wedding!
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