diy backyard wedding

It would depend on where you are located. Have you looked in the vendors and venues tabs they have a lot of suggestions

For DIY/backyard weddings I'd look into parking options for all your guests, generators if you'll need more than just your house's power for DJ & lights, etc., lights for outside, speakers, possibly spraying for bugs if needed, tents/fans if needed, etc.

I don't have any experience, but just know from reading many posts on this forum, be prepared for it to be significantly more expensive than you might start out expecting. Search "backyard wedding" posts and you'll see that many couples end up finding it to be as or even more expensive than using a more traditional venue by the time they bring in everything they need. If it's because you love the location and that's what means the most to you, go for it. But if you're primarily doing it to save money, just be sure you really do your homework so you know exactly what it may end up costing you before you've reached the point of no return. Good luck!