It really depends on your contact. Most day of coordinators don't do much until the week of the wedding. Our coordinator will be reaching out to each vendor the week of the wedding to finalize plans and timelines. She offered to attend the rehearsal, but we're not having one. She will arrive at the same time as us the morning of the wedding and set up breakfast for the bridal party. While we do hair and makeup, she'll be setting up all of our decor and coordinating the vendors. She will also be the point of contact for the day of. If vendors, bridal party, or guests have questions, they will be directed to the DOC. She will also watch the clock to make sure that we're running on time and give "gentle" reminders when it's time to get dressed, stop photos, etc. She'll be there to direct guests when they arrive. She'll direct guests to the seating chart at the start of the reception and coordinate all of the reception events with our DJ. Aftward her and her team will do all of the tear down and clean up.
I would say the DOC should have all the contact information of your vendors to organize the schedule for when they arrive that day to set up/deal with insurances. She should be up to date on all the information your venue has provided you. Potentially responsible for set up of decor (I know mine is and has a team that additionally helps for a 3 hr time slot). She should have a schedule of events for the day and help kind of move things along to the next step/direct guests where to go (aka from ceremony to cocktail hour to dinner). This is just based on what mine will be doing and she is a part of my venue, I am not sure if outside DOCs do different things.
Make sure to go over what is expected from all of your other vendors with you DOC.
I didn't think to tell mine that;
my dj was supposed to have up lighting
my caterer was supposed to pack a meal for DH and I and take it to our rooms
the bar was supposed to serve champagne to the head table
The left over cake (not just the top tier) was supposed to be packed up and takin to our hotel room
Our DOC was absolutely phenominal but because I never told her that these things were supposed to be done, she wasn't able to insure that they were. Think of you DOC as a babby sitter for your other vendors.
It depends on what services they provide. For us, we wanted someone to set up decor & get gifts & cards and clean up at the end of the night. We also wanted someone to communicate with vendors and manage the entire day.
Ours is doing pretty much all the above, as well as continuing to check in with us throughout the night. She's going to have a detailed schedule, but also promised to double check with us before going onto the next thing. I.e. if everyone's up and dancing at 8:30 when we said we were going o do cake cutting, she'll ask one of us if we want to stick to the schedule, or wait for a break in the action. She's doing a ton of coordination, and she'll also be responsible for a lot of the decoration, but I think it's the little things that are going to be the most valuable.
As people above said it depends on the contract you have. I know for my day of Corrdinator I also have her doing set up and clean up ( which is additional to day of Corrdinator) so for me I will have my decor and stuff ready to go labeled where it goes and she will put it out. She will make sure that all the vendors are here and know where to go and that they are set up on time. She said she’s kinda just my right hand woman and if I need something done she’ll do it! I love her!!! She’s the person people go and ask when they want to ask me a question but can’t 😂