Bachelorette Party Ideas

So my sisters are my maids of honor and we were discussing some bachelorette ideas. They are all younger then me so I am going to be involved in the planning. The youngest is 19 so I was trying to find some good ideas so that all can be included. I want it to be fun and somewhat wild but nothing too crazy (no male strippers..LOL!) I have heard about this 80's Awesome Prom thing and thought that might be a good idea. Has anyone been to this?? What do you think? Any other ideas the main things must be 18+ and somewhat affordable (nothing too over the top since they are younger and don't have too much $$$).

Thanks in advance!!!