Bring food... bring food... bring food. At least enough to fill you up for dinner on 15, because you're going to get a little roll with 1 piece of turkey for the second meal service.

I always carry a sandwich for each of us, as well as granola bars and nuts.

Ditto for the way home, though it's not as bad because the flight leaves late & you can have a normal dinner at your hotel. I just make sure we have a few snacks in case we feel like nibbling.

I wouldn't count on the rev up - I have never been able to get one.