Nah, Morsul, it wouldn't be odd. For the premiere it said something like, "Costumes may be worn, but no weapons please!" I can just see fans being disarmed at the door like Gandalf, Aragorn, Legolas, and Gimli, at the Golden Hall! But I did see a few people dressed up there. I myself had brought nothing with me on vacation that would have passed as a costume...
And I'm rather irked, because not only can my father not provide the ride he offered (he's going away somewhere for those days), I have to take the PSAT's then! I'm giving up Sean and LotR for some stupid tests!
Oh well.
Anyway, one of my favorite parts of the exhibit which I just thought of was the stuff from Saruman's little study in Orthanc. He's got all this creepy stuff that I never noticed before... skulls and squid in jars and things like that.