We just returned from Yosemite this week and stayed outside the park at Yosemite Lakes RV. It is a thousand trails park however, they have sites for non-members as well. Very nice park 5 miles from the entrance to Yosemite. Getting reservations inside the park are needed atleast 6 months in advance and are hard to get from what I've heard. I'm not sure about the crowds but they were no bad during the week this time of year. The folks camped next to us went in last Saturday and said the crowds were awful already.