So my maids of honor and I have been discussing the bachelorette party and we came up with a fun idea that's very non traditional. I don't drink and I don't really party or go out that much, but I do love Jane Austen. So we've been talking about having a Jane Austen themed party, because of this we ended up finding the venue for my wedding and we'll be throwing the bachelorette party there the night before. It's a castle here in Tacoma Washington that is beautiful red brick with a lively garden and it's the perfect setting and it doubles as wedding venue and b&b. We are planning on dressing up in gowns and watching the 7 hour pride and prejudice movie and just hanging out and being silly. Now the problem. I've invited his two sisters to be my bridesmaids and I know for sure they wouldn't have any fun doing this. I really want to have the party without them, I fully intend to include them in everything else and I want them to feel like apart of the party. But because of rooming logistics it cuts the cost in half for them to not join in, and they wouldn't enjoy themselves if they did come. I know the most polite thing to do would be to change the party so that everyone can be a part, but my moh's and I started talking about this idea even before I had the concept for my wedding and I'm just so excited for it. Does this make me a horrible person? They're 6 and 10 years younger than me and were not very close and they have very different interests. Is this something I can do without feeling like a bad bride? I guess I'm looking for validation here to not feel bad.