Yeah, I've been to an AFI show years ago that I was in assigned seating. I went with a (girl) friend of mine YEARS ago that had invited me along... if only I could remember what year it was and where it was. I would guess pre'06.
But yeah, it kinda has its perks. I mean it doesn't change the fact that YOU'RE SEEING AFI, however, you have no freedom. If you get out of your chair to stand up for feel like an asshole because you're blocking everyone else's view, etc. I believe I was actually asked to find my seat because I was watching the show and getting really into it and wanted to get closer (NOT the pit, but just closer) and the same thing happened... I had to sit down.
If I was able to see AFI again this year but had to sit down in an assigned seat... it would kinda be over my head like a cloud, but you just gotta remember that you're seeing AFI so you make the exception.
I'm not trying to spoil your mood or anything. I'm just reminiscing from my experience.