I can only speak of my experience last year, but whilst it was very busy, I got to meet everyone I wanted to and got every auto/photograph I wanted, no bother. I'm sure you'll be fine. It's a much smaller event than London.
I didn't find out the talks were to be ticketed and charged for until a couple of days ago. By the time I did, the James Marsters talk was sold out. I'm gutted. He's the main reason I'm attending.
I was just telling someone last week that the great thing about Glasgow was that all the talks were free. So much for that idea.