I am headed to Flagstaff for a 4 ish day trip land late the 23rd leave late 27th, the only thing my girlfriend said we must do is see the Grand Canyon.

I am wondering if there is anything I need to be careful of with sites out that way. I am from PA and the biggest thing I have to worry about is law enforcement, Mold, Soft floors, and Bums.

I saw some stuff listed as being on old RT 66 I just didn't know if anything was strictly off limits or I should avoid. Thanks in advance I'm just not trying to catch new fines in a new state (not the souvenir I am looking for)

Probably one of the bigger things to be aware of is trespassing on tribal land. They work by a different set of laws, so you're really at their mercy if you get busted (they can confiscate your camera/gear, car if you're parked on their land, etc)