On the serious tip:
When you first get there, go take a lap through the garage. Get the lay of the land, see how things are laid out, etc. Study the drivers' photos (since you don't know them), but you can always pick them out because they'll the ones tailed by 20 whores and a couple fanbois while they do the walk-and-sign.
Go into the media center and figure out where your seat is, No. 1, then go to the wall/table of releases and make sure you get an entry list, a qualifying order, and any practice speeds that you might not have been there for.
If you can, jot down your e-mail on a couple pieces of paper, go find the manufacturer reps, and have them add you to their mailing lists just for the weekend. They all sit in one big clump, and they'll be wearing the logo on their shirt/hat. You will get the quotes MUCH faster on e-mail than waiting for the minimum-wage office worker to copy them and bring them around.
Pack a lunch, or have cash to get something from the vendors. If you're at an ISC track, the food pretty much blows.
Depending on what track you go to/what drivers you talk to, DEFINITELY take a digital recorder. There are times you'll be on the eighth ring of people just sticking your arm up in the air and hoping to pick up quotes. Also, don't let the TV schmoes clobber you with their cameras...they love to do it. I dropped the most well-placed elbow of my life in a scrum in the Dover garage.
Anything else, PM me.