What do bridesmaids traditionally pay for at a bachelorette party?

I am in a wedding in October and am getting married myself in December. I just got an email from my friend's MOH saying she booked 6 of us (including the bride) a hotel suite at a beach near to where we live for $147.00 a person, which only includes the hotel room for 2 days. That is wayyy more than what I expected to pay for just a hotel room when there are 4 other people contributing, since we are paying the brides way for the room. I believe we are expected to pay for the bride's meals and alcohol as well as our own all weekend too. This really stresses me out, because I am the only one working out of me and my fiance (he is a FT nursing student) and I support our child as well. So I pay our bills and am contributing to our wedding which is around 45 days later than my friend's wedding. I wrote an email to the MOH explaining that I can't afford to pay for the room as well as my meals & alcohol along with the bride's. I feel awful... (cont'd)