Rock of Ages

I decided to pick up my rock of ages tickets at the theatre at around 6:50pm and I was like wow. Why is there like a press thing going on cause you have a bunch of photographers with people handling the lines. I didn't know what was going on so I left because I had a few days to pick my tickets up. Don't quite know what's the difference between between opening day with the fact they already began performances a month ago...? I dunno. One of these days I'm going to grab someone in theater and ask them what it's all about.