Bachelorette party help

I'm not sure why you would combine the bachelor/bachelorette party if you both were on different floors? I would assume your MOH would plan the bachelorette with the help of other bridesmaids. Typically everyone splits the cost evenly, but their budgets should be consulted first.

Nobody is required to throw her one, so she is absolutely allowed to plan her own bachelorette party. Just so long as she asks her girls if they're comfortable spending money on one and not expecting them to cover the entire cost

I would say if you are throwing it and you want it to be a cruise, you should pay for everyone you invite. If someone offered to throw you a bachelorette party, then they would typically pay, but if you are doing things your way and not taking into account the budgets of your friends, then the right thing to do would be to pay for them. I wouldn't expect my friends to drop a lot of money on a trip celebrating me. Good luck!

You're hoping to do a cruise like on an actual ship? That sounds like so much fun! But that can be quite expensive. Oftentimes people do combine parties and do both bachelor/bachelorette together. You could always go together and do some things as a big group but do other things on your own. If you want to do a cruise, I'd recommend a short one, like 3 nights because of cost. Maybe ask everyone what they think about that idea and see where they're all at and if they'd be willing to pay for it? There is nothing that says you can't be involved in planning! I think you can plan as much as you want and pay for whatever you want. If your bridal party wants to chip in for you, they certainly can, but I wouldn't expect them too. I'd first gauge interest then look into cost to give everyone an idea of what it might be. Typically your bridesmaid will pay for your share, or at least some of it, but they usually plan it as well. I had a hand in planning mine but my bridesmaid did pay my share. We just went to the wineries at Seneca Lake, NY and brought food on the party bus. It was nothing too expensive or elaborate but it was fun. Talk to your bridal party and see what they all think but don't expect them to pay.