Flying help!

[ima_totalgeek]

 I'm flying to boston to go to a program at Harvard - and while that's as close as I'll ever get to being a student - the thing that is worrying me most is the flight there.  I have not been on a plane since I was 16 - I'm about a size 26 now - what are your flying experiences?  I'm going with two slim men and don't want to feel humiliated.

I'm flying from Toronto so it's only an hour and a half flight.

Help please!!