I think your biggest problem is that you'll love IST and be upset you only have a few hours to spend!
My biggest worry while in IST was that I was going to have to deal fending off one of the "Let's have a drink at this bar my new friend where I fleece you for $500" guys.
Went to one gay club and at first I was I was nervous to walk in this building's alleyway because of 2 rather sketchy looking big guys out front and then I realized those were the security guards there to protect ME (and turned out to be really nice).