I've never seen anyone asked to change their outfit on ABC night...and all of us wear just about nothing. A good buddy of mine wore a DingDong box on his cock, that's it. My wife usually has electrical tape over her nipples and crotch, and that's it. Go for it, you will be fine, and if security gives you any problem, let them know Doug said it was O.K.
I must clarify this post. I made the comment to Jason and he wasn't supposed to post it. He's a very naughty boy and needs a spanking!