To answer both questions.
First we typically show up on Thursday for registration, park and walk around, talk a bit, and then head out to the hotel for the next day. or you can show up any day if you want (Fri, Sat, Sun) You can leave your car, or you can take it back to the hotwl with you. Once the sticker is on your windsheild you can come and go as you please. Judging is on Saturday, awards are on Sunday along with the parade.
Second, They actually have a car washing station with about 6-8 hose parking spaces. Of course it is first come first serve, so if early you should be fine, if late there will be a line (hey that rhimes) :lol:
Any questions can be answered at carsatcarlisle .com and you can call them, the number is on the website.