Whenever I weigh myself in the morning after I wake up, I always make sure I poop and/or pee first because it usually means the difference between 1 or 2 pounds.
And then I feel better about myself.
As far as assigned seating goes, it's nice unless the theater is crowded and you realize that there aren't any 2 seats together any longer, so you and your wife have to either sit in separate parts of the theater or wait for the next showing. I'd much rather jostle with the crowds and find a seat together.