I don't know about you, but when I'm carrying I really don't want to be sandwiched in shoulder to shoulder with a few thousand other folks. Just too many strangers and hands around. Hard to enjoy the concert while constantly evaluating your ability to retain your weapon. Wallets go missing all the time, no matter how well hidden.
Besides, statistically speaking you are more likely to be trampled to death in a rush to get in or out at a concert than to end up in a civilian shooting.
Probably true, but I never have had difficulty retaining a wallet at any
concert I've ever been to. Yeah, you might not want to carry a gun
if you're going into a mosh pit, but other than that I don't see the
added risk.
The only downside I can see is that in
some places (the garden especially) the seating can be horrible in
some sections and sitting in an unpadded tiny seat with a gun in
your backside might be uncomfortable.
And it isn't carrying there that I would even care about; it's about
getting back through the wonderful subway system late at
night, etc. The only consolation prize is that you generally can plan
a route that doesn't take you through bad areas.
The biggest problem is that one will not get an honest answer
out of whoever is doing security... they're probably going to say "no" unless
you dance around the bush a bit, and even then you might not get a
real answer. The only way to really know is if you know someone
that works there. So practically speaking carrying to large venues is
often a non starter because of that reason...
-Mike