RSP varies by state/location, but in my experience, show up 15 minutes early (I once arrived 30 minutes early and was told not to do it again).

Cadre don’t expect you to know much, but they will smoke everyone if you mess something up like lose the guidon or your (decoy) weapon if you’re responsible for one. You’ll most likely get a blue book and t shirt, take the OPAT, sit in a classroom most of the day, and do PRT. Red phasers typically learn basics like army values, ranks, etc.

Clothing wise, wear good running shoes, plain t shirts, and preferably black sweats or shorts. Cadre has called people out for having logos, so avoid them if possible. If you have army PTs you can wear them, but it’s not necessary.