I can't ever recall sitting anywhere but the outfield bleachers. Well, I did get free "picnic perch" (all you can eat hotdogs/popcorn/icecream/soda/etc until the 7th iirc) tickets at Camden once, but only ventured up there for the food periodically. Can't miss out on heckling outfielders and confessing my love to Adam Jones.
I did however get to ride in an elevator with the O's mascot on my way back once.