Should bachelorette weekend plans be spoiled bc one bridesmaid can't attend?

I am the MOH trying to plan a getaway weekend for my friend's bachelorette party. As friends, this would be one of the first times we are all going away together, and the last before she gets married. I had first suggested an island getaway, but two of the girls had a problem (time off/finances). In an effort to include everyone, I suggested a shorter weekend, (Fri, Sat, Sun) to Miami. EVERYONE initially agreed in the email reply (5 BMs including myself) except for ONE bridesmaid (she is one of the two who had a problem w/ the island trip). When we spoke in person as a group, she stated she could not take time off from work, and she was also in several other weddings so finances would be a problem. When i offered a weekend trip someplace driving distance where she could meet up with us saturday if we got there friday, she had a problem w/ that saying the bride "wouldnt want some people participating some days, and not all".( i personally think the bride will be too busy having fun to notice one person missing and would be just as happy for her to join saturday..) This BMs idea is to go to NYC for a show, dinner, and a club for the night. Am i being unreasonable in suggesting a weekend getaway that one BM can't attend? Though it would be nice for everyone to be able to join, i feel that she is being selfish and difficult and the bride will have to sacrifice an awesome weekend away, for a night in the city (which we ALWAYS do since we live right outside of it) all bc of one person. It's not the bride's fault that she's spread herself so thin! She shouldn't have to settle just bc one of her bridesmaid's has a destination wedding to attend! Im considering a weekend away anyway and still have a "one night" bachelorette party but this is unfair to everyone who will have to treat the bride twice! (And i'm sure this bridesmaid will still feel sour about not being a part of the weekend trip.) I dont want to exclude anyone but I feel she should politely decline if she is unable to attend for whatever reason and not make it as if i am being unfair when i have suggested other ways for her to be a part (a closer and cheaper weekend where she could join saturday), and not ruin everyone's fun. Bc she has a problem w/ it, other BM's who were previously excited and willing to go to Miami, got very quiet and seemed to (reluctantly) back down and settle. One of the BMs is very close to her and has shown signs that she would also support her and not join if we did a weekend away. This would really upset the bride to not have these two important people there (one is her cousin and the other a best friend). Should i get rid of the whole idea and just do the one night in the city that everyone could attend?(Note: everyone would NOT be able to attend bc the bride's sister is 20 and would not be able to party in NYC. In Miami at least we have a hotel room to party, and the beach. Plus she could stay in the hotel one night that we go out) Should we have (essentially) two celebrations? or simply tell the one BM that its too bad she cant join but this is what we're doing? I dont want to rock the boat bc we still have a shower and the wedding to deal with and aside from that i will be seeing her in the future and dont want any hard feelings. SN: this would be a surprise for the bride so she has no idea that there is this issue, as i know she would want to keep everyone happy and just "settle". I just want my friend to have a really memorable bachelorette weekend!! This BM claims the bride is "simple" and would really enjoy a broadway show and night out as it would be meaningful.... though i know she isn't an extravagant girl, this is her bachelorette party! we could take her to see a show for her birthday!