The next thing we all figured out was that once the bed is opened and set up you can't get into the storage drawer. The storage drawer was obviously put there for linens and pillows and such, so be sure to get everything you are going to need out of there before you open up the bed.
(You'll do it to yourself. More than once.
The next thing you'll do, if your couch is in the slide room, is pull the slide in without unplugging the little air pumps power cord. You'll do that, too. once is usually enough. We penciled in a note on our checklist to make sure the couch was unplugged before moving the slide.