I'm doing an international bachelorette party and I'm paying for my own lodging and airfare. I'm grateful that my friends are coming on trip with me. Do you think I should pitch in for other stuff? I'm already under the assumption that I'll split the costs for food and other expenses with the gals. In addition, I'm thinking about paying for a special activity for everyone as a way of saying my thanks. Has anyone had similar experiences? Or is that not necessary?