Your seat is fine for EVERYTHING.
Before the show you do not have to claim to purchase anything...however, they can only allow a certain number of people onn the stage, so you might have to wait.
At intermission they ask you only go up if you are purchasing a drink.
I'm sure the other poster meant to NOT expect strobe lights. It's a really beautiful and simple moment.
Can't answer your last question: I don't stagedoor.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.