Ok, here's the situation:
Over time I have become a decent acquaintance with MY fiance's co-worker's fiance (the bride). Her bachelorette party is this Saturday, 8/20. She told me a long time ago about the date but I didn't receive any details or an official invite until LAST Monday (that would be about 12 days before the party). Her invite required us to RSVP by that Wednesday (meaning in 3 days). The invitation (or really, just an e-mail) included an approximate cost per person and the major events that she had (semi) planned (a spa day, dinner, night out, hotel and brunch the next day). She that said she would send out another e-mail with more details, exact costs and websites in the next few days (upon my inquiry).
Long story short, we have yet to receive any of the promised "details." I did tentatively say yes, I would go, but did specifically ask for more details on the places, times, etc. The estimated cost per person for this night/day out was $300. At this point, I'm getting annoyed. The party is supposed to be in 5 days and no one has any idea what is going on or where we'll be. The price seems to be a bit much and I also have some other obligations over part of the weekend.
So, is it rude if I back out at this point? I know that she is reserving hotel rooms but I also know that most hotels allow a 24-hour cancellation policy. I'm thinking maybe I will agree to attend some of the events during the day but back out on staying over night. I don't want to put anyone out and if it's too late to cancel on the hotel I will still agree to stay or at least to help pay. I just feel like I'm not that great of friends with this girl (although I do love her, for as much as I know her so far) and it's become more of an inconvenience than it's worth. I just feel bad that her MOH is so preoccupied that she couldn't put something together earlier, and I also feel bad because I know how excited she was about this weekend and I don't want to let her down. Thoughts?
Sorry, longer story than short.