Trying to be nice

So my inlaws are paying for a beach house and invited my husband and I, and their other son and his gf who are younger. Now my husband and I got engaged in this house two years ago and we didn't have a real wedding or honeymoon we just went to court and that's it. Well with that being said, we were supposed to get the bottom apartment bc we never got the privacy that a married couple should have and it was fine with everything. But just yesterday we found out the bottom floor wasn't in the package and we agreed to just have the top floor, that's fine bc we were still going to have a room blah blah well it turns out the younger brother refuses to go if he and his gf can't get a real room (it's two rooms and a loft room that has a half wall so essentially no privacy) my husband and I said we would take the half room bc we didn't want his parents getting bent up over the other couple not going.... Keep in mind we all live in the same house anyways so we get extremely tired of each other ..lol.... PRIVACY... thats all I wanted out of this vacation... for 7 months my husband and I have been living with them and hating every moment bc we are never alone, we cant be a married couple and we were under the impression that'd we would get a relaxing vacation that we are helping pay for unlike the other couple... Sometimes I hate being nice.. I gave up privacy and being a wife to my husband just so this non- married couple can bang it. We rarely have sex as a young married couple ever since we moved in with his family and ugh it sucks that we can't on vacation either, I can't change clothes in my own room and it's a quarter of the size of the other rooms . FIRST WORLD PROBLEMS PEOPLE.... jk I just wanted to rant a little a vacation is a big thing we're I come from since vacays are a luxury .anyways sorry for being a boob.