As for detailing supplies, bring what you have, I do have a fair amount to get anyone started. If you have applicator pads and micro fiber towls, bring them. Any products you like to try, bring them. Any detailing tools, bring them as well. I have 2 pressure washers, 2 vacumn cleaners, and plenty of wax. If you have a claybar kits, wax whatever you prefer to use bring it you can comapre it to some of the stuff I use.
Also I will be supplying Brats, chips, and water. This will be a BYOB event, I will have a cooler with ice on the premisis.