I don't really care about tourists hanging out in the tourist areas. But could they just drive the speed limit. I get that it's beautiful, pull over and take some pictures you've got 3 cars behind you. They could also make sure their tires aren't bald when they drive up in the winter, yes good tires are a must around here. Also if they wouldn't litter out in nature that would be great too. Or if they would start hikes early in the morning instead of it getting dark out and calling 9-11 for a rescue because they're lost now. Or just learn how to use caltopo, it makes orienteering trivial.
P.S. if you have to shit, walk off the trail somewhere out of sight. No one wants to step on that.