So a friend of mine is getting married in March and we are doing a weekend getaway for her Bachelorette Party to San Fran. 
Her FSIL and another BM that is a friend of mine decided to plan her Bachelorette. We are flying out on Friday. I have been asking for a breakdown of the hotel cost and an idea of what we will be doing for at least a month, we finally received it about a week ago. 
This is the first email: 
Hey guys! Just a few estimates on the cost of everything so you
are prepared ... (we may decide to split Carolyn's way as well which might
increase the cost a bit). Estimates below are splitting everything 9 ways
(might adjust with some last minute changes too!) Hotel rooms (shared with 3
people): $182/each for the weekend Friday night dinner/show: $65/each (includes
tax/tip and covers Carolyn): $65/each Limo/wine tasting for Saturday :
$125/each
OK...I didn't realize I was co hosting this event, but I had planned to offer to help with Carolyn's cost on a dinner or activity anyway so I decided to let it go. 
Then today I get another email:
Sadly Amanda is unable to make it this weekend due to some
personal reasons so we will have to split the hotels/wine tasting/dinner 8 ways
instead... just keep that in mind from the original cost estimate I sent
out. 
The hotel is approximately $204 (assuming I calculated the tax
correctly) and the wine tour is $115.50.  For dinner Friday, it is going to be closer to $70 now per
person.  $60/each (includes tax/tip) + $10 for Carolyn's. We can just
collect that + whatever people buy in drinks when we pay the bill. 
I am seriously offended that this is the way these girls decided to handle this. The 2 BM that decided to plan this should have planned to pay for the Bride, I don't think they should be imposing this especially last minute...it's not a lot of money, but the principle.
Do you girls think I am overreacting?