Ray:
I've stayed in State Parks here on the Oregon Coast that have full hookups this summer, in spite of my solar panels...
It's nice to have running water and electricity, since we have to pay for em anyway...
These were great Parks right on the ocean, which for some of us, is akin to your 10,000 foot mountains - which we also have...
I agree with Windbreaker about crowds. If it gets to over crowded, we pick somewhere else to go that's nearby...
And I agree with you that the true limitations are the TM's holding tank and toilet. With my family, we can get about 4 days max out of the tanks before having to dump - but a BLUE tote would help that, but that requires additional space for hauling...
Kinda makes tree's look good, you know?
Gregg