always. my seats are in M, 1 and 2. i went forever thinking i was on the aisle, until it hit me that Neyland is the ONLY stadium i have ever been in that the splits sections right down the middle of the section. so i'm in the middle. however, i am right above one of the entryways into the stadium, so i am easy to spot on TV. and nobody sits in front of me.
i like the aisle though, because i hate having to walk over people. i don't mind them coming and going though, because i can just step out of the way.
most races i go to, we have seats on the aisle. that's always a plus for bathroom breaks.