Keeping a group dynamic is going to be one of the harder things you encounter. Once you get a place.

On what place to go to? As you noted Gay bars are quite welcoming. Just go before their main crowd arrives. Many times they will have an area that is designated for dancing and such. This kind of floor space would be ideal, for any munch.

A group I was a member of in Florida did this, and as long as we were out before they opened the dance floor they had no objections. In fact, many times we would frequent their bar to get drinks during the munch, so they appreciated the extra business.