Thanks to both for your ideas. DH and I are arriving first, alone for five days! Then the rest of the party arrives. I can't justify in my mind paying for the two bedroom lock off for five nights when I won't need it. I could do a one bedroom first and then the two bedroom lock off for the second five nights and sort out the whole ticket thing. I was going with a package which adds to the complexity of the whole thing, but that can be easily sorted out. Even with two bedrooms though, there are not enough beds without sleeper sofas.
You are right I could put DD and DDBF on the sleeper sofa, but UGH, I feel so uncomfortable about that. DDBF (means boyfriend, not best friend) and although they have been going out for three years...I just can't picture me trotting around in my pajamas!
The point is well taken though that I probably will not get the one bedroom together with the studio because unless I am willing to change rooms, the studio that is next to me has to check out the exact same day as they arrive.
I think I will have to put this to a vote at home. Thank you so much for all of the ideas, I really appreciate them!