Vulcan, the only thing you'd have to watch out for is last-minute aircraft changes.

Twice in July on flights I took, a domestic 757 (24 seats in F) was changed for a BF model (16 in F).

I had checked the boarding totals and aircfaft type the morning of the flight on a terminal that (wink wink nudge nudge) is a little more detailed than ITN so the substitution would have had to have been made just a few hours before flight time.