Be advised the allotted seat width is 17 inches/person.
Take this to heart.
Some years back I went to an ND - USC game. I was in the lower/original bowl, south end zone about row 25. I had trouble finding my assigned seat since the "cheek spread" of my two gentlemen "neighbors" obscured my seat number.
I estimated that they each weighed 350 or so pounds and without stadium seats or pads they spanned approximately 25 inches each. My skinny, 130 pound ass takes up no more than 15".
Good thing it was a sh¡tty game, it started to rain at the end of the second quarter and they both failed to return after the half.
ND won, by the way, so the squeeze and the rain were more than worth the eight hour night drive and the squeeze.
Go Irish – kick USC's sorry ass butts!