I don't know if that's a good idea, but that's up to you.
I don't know what diseases/parasites you might be exposing him/her to. I've only been to one smaller meet, but the crowd was large & noisy--enough to freak me out, let alone a little guy.
oh, didn't know that, the only reason I though of it is because I brought my small tortoise one year and I saw other people bringing there bearded dragons