Shorts and a t-shirt is fine, closed-toe shoes are required.

SPC has a nice covered shelter with picnic tables, so you may not even need the tent.

Our insurance requires all drivers AND passengers to be fully licensed drivers. No permits allowed, and even if you're over 18... gotta have a license. Under 18 must have a parent to sign the waiver. Technically, we don't allow "passenters". Every passenger is a student riding with an instructor, or instructor riding with student. (we all have something to teach... we all have something to learn)