Pack your pajamas. They're easy to forget.
Bring a pen that you don't mind parting with in case you need to jerryrig a malfunctioning toilet to stop running.
Don't drink out of the glasses in your hotel room. If you do drink out of one, don't do it while watching a news special about how maids actually clean them.
Don't arrive after hours at a little local hotel that just leaves your keys under the doormat. If your room hasn't been cleaned, there's nothing you can do about it.
Don't fly in or out of Philadelphia.
If you fly America West, expect your flight to be delayed due to mechanical problems.
If you fly American Airlines, try to avoid sitting in the very back row. If you do sit in the back row, wear a rain poncho, since there's a slight chance of showers.
Don't trust the baggage claim monitors in the Salt Lake airport. Your baggage will rarely be where it is supposed to be.
Eat an almond pretzel at Auntie Anne's. They're yummy.