Having problem posting this message all in one piece -- breaking it up into three parts.
Part 1:
Yosemite Valley will be very crowded, but there is a good reason for that -- it is great, especially this year. I am not sure whether there are any reservations available for any of the campgrounds at this time. There may be some first come first served places at some of the campgrounds not in the valley, like Bridal Veil up on Glacier Point Road.
If you want some peace and quiet, try Sequoia National Park. Lodgepole and Dorst are good campgrounds. Not sure if you can stay at Potwisha (near Three Rivers) and commute up 198 -- your vehicle may be three feet too long.
In the Lodgepole area, don't miss the short hike to Tokopah Falls.
