Dragon con

So my partner and I are finally going to dragon con this year in Atlanta. If all goes well he will have his spiderman costume (both from the Raimi movies and the upcoming) and I will well I HAVE NO IDEA what I will be wearing other than my 'nerd' shirts and jerseys yet, still not sure how wearing spandex in public will work for me. But I have questions, what should we know about going to our first dragon con? Any comments, suggestions would definitely be appreciated.