Visiting National Parks with dog

I've done many years with pets and the difficulty has always been what to do with them while I'm away from the RV for an extended length of time. Most parks will not allow them on a trail. If the weather is mild and you have a large RV they would certainly be OK for a few hours with the windows open and water bowls. But are they quiet? Campgrounds (and your neighbors) often have rules about unaccompanied animals and noise. In warm weather I've left them in the RV with the A/C running, but had the park transformer blow. So you can't rely on that approach. Since you have someone to care for the dog while you're on a trip, that would certainly be the best solution. You will enjoy the trip so much more if you don't have the worry of how your dog is doing while you're on a long hike.