I have been to Gigi's and it has a few things that also attract the straight crowd, male and female. The first is the drag show that can be fun for anyone. Then after the show you come upstairs to a noisy dance, drink and pool table area with some tables to sit and watch everyone else. A lot of girls like to dance among themselves because their BF's don't dance, or don't dance very well. As was said, there is also that safety factor of being around gay males who have no sexual interest in females. Then you have the good fun of meeting and interacting with a very diverse group of people who are there for the same reason that they are, to have a lot of fun. I have seen TG's, gays, lesbians and a lot of straight people there.

So, I would say that if you can, try to go with your GG friends for a fun night out. Don't be nervous, be part of the fun. They will love that and invite you again. At the same time, you can check out the crowd and venue, have fun, and find out how often each of them go there. My guess is that they only do it once in a great while, thus hopefully leaving you with a lot of free days in between to go by yourself as Joanne.