Its pretty much majority of top cars from the East Coast, some Midwest and a small group of devoted CA vehicles. every car should be open and on display. Just walk up and talk to the owners, most should be willing to give demos. Bring your own USB preferably in FLAC since Flac is pretty universal, altho many may play WAV files too. Be respectful of people's time and equipment. Most SQ guys will have at least 3-8 judges for the weekend between Finals and the 3x for multiple orgs. So even tho someone may say "you can turn it up" ...dont---Get it to a reasonable volume to get your listening impression but dont try and test the limits of the system---the people doing every Org just forked out over a GRAND in entry fees, plus hotel etc.... so u dont want to be THAT guy who caused someone to have issues. (yes Ive seen it happen over the past 20 years)
There is also a huge car show in one of the side venues. SPL is in another. so lots to see and do. definitely cant do in one day
If youre getting a demo, and a judge needs to do their job, please be respectful and let them get judged and come back later.
biggest thing is to remember, that everyone has a common goal to make their vehicle sound its best--and sometimes that can vary from car to car and person to person. It may not be to your preference, but that doesnt mean its wrong.
Ive given Demo's before and had people just flat out say " yeh I dont get it, my friends car sounds way better" ---then their friend finished almost dead last while I'm in top 2 or 3 in my class.
to summarize
Bring your own music.
talk to people--most will love to talk about their cars
and be respectful of people's time and equipment.
Remember--it is a competition--people handle competition differently- some may be more stressed than others, some may be more willing to give demos before judging, some prfer to have judging complete before demos