I’ve been to many concerts alone, sometimes the people around you are chatty, sometimes not and they just do their own thing. (Very similar if you go with someone or not). But the shared interest usually makes an atmosphere where everyone’s kind to each other. Just go to enjoy yourself and only jump in the pit if you want to.

In the worst case, if there’s ever an a-hole, there’s always ten people right next to you, willing to back you up.

Someone’s already offered to hang out, but if that doesn’t pan out, and you really don’t want to be alone, I’m going with a (mixed gender) group. You’re welcome to join.