I once smoked in a Native American Church in my hometown...but then they do peyote there, so not sure how "risky" it is.
it depends on the reservation. They got their own police force. Some reservations make alcohol illegal. In Alaska you can sell a bottle of alcohol for 250$ if you can smuggle it into some of those far out snowy reservations.
in my own bathroom, my family pulled up in the car when we were smoking. Paniced like you wouldnt believe. Had to toss the blunt.
Right outside the concession stand/bathrooms for the baseball field at the high school. I suppose it was only risky because you get in more trouble if you get caught on school property. We used to smoke out at the lake all the time, but that wasn't so risky, cuz the park rangers only fucked with minors over that.
-Walking around the grove of my college campus with a spliff -Behind the college president's house. Well, I did that just about every night back in college. -Hotboxing a car while driving 3 hours on the interstate late one night -On the front porch of my super-mega-christian grandparent's house when I was 16 -On top of a small island-rock out at the coast which was supposed to be a bird sanctuary, in clear view of a lookout point where I could have easily been spotted and reported. -Utah -Outside a stadium before a football game