Smile, and focus on what a beautiful wedding you will have. While I'd enjoy having my friends in the same hotel as me, getting ready for the wedding, and having time with DF alone, is just as important as hanging out with friends. And, they can always come over, the walk between both hotels are not that far. I am sorry friend is already giving you drama. Just note, a wedding has to have some drama, so that's your one drama, and you're done drama. Move on, and be happy for all the people that will be coming to your wedding.
Oh, and your dress is stunning.
Hugs.