You are welcome to stay anywhere! But if you want to be closer to Datie and Molly, we recommend our hotel block!
This totally depends on where you are staying and what your uber budget is. If you stay at the hotel with the room block, you likely will not need to. There are plenty of resturants and things to do at the hotel (including a shuttle to the Cabana Beach Club)! On wedding day, there will be a shuttle going to and from the hotel to wedding and reception location. If you prefer to stay somewhere else, a car rental might make travel the rest of the weekend easier!
If your invitation says "and Guest," yes.
If their name in on the invitation, yes. Otherwise, kids' attendance is not encouraged for COVID safety for all guests.