If you truly carry for defensive purposes, then nobody should know you're carrying. If the need ever arises that you need to defend your life, who the fuk cares if you're "allowed" to have a gun there or not.
I've been to 3 concerts at Philips this year and carried every single time. I'm sure they have a policy against it that I'm not aware of, but IDGAF. I'm never worried about anything happening inside, it's walking to and from that is the issue. Several years ago a friend of a friend was leaving Philips with his wife and 2 kids after some kid event there, a black man put a gun in his face and made him turn over the keys, jewelry, and wallets. Fortunately they lived through it. Given the IQ of the robber, he was arrested that night living up in a suite at the Swisshotel on the guy's credit cards.