After you've arrived at Ephemerisle, you're likely to want to check out other islands than the one you're staying on.
If you can, can, bring a boat! Powerboats are dope — super fun and useful! People will love you if you bring a boat with a motor that can carry people and things.
It doesn’t even have to be yours! Borrow a boat from a friend and bring it if they’re not going to. More boats = better event. Boats.