I am in for this one too!!! I will be riding my 07 990 all the way there and back, ah lets see, yah, the entire 10 miles from my house.
As far as camping goes, the Rally is in an area surrounded by National Forest land, so you can just pick a road and rough it. Personally I would not be ok leaving my stuff there all day though. The nearest and best sites will be up in the cascades, about 10-15 miles from the Rally site. At this time of year reservations should not be needed. but maybe better safe than sorry.Elk Lake Resort (www.elklakeresort.net
) is a nice place, they have group sites where all the Orange hooligans can converge. There is a restaurant, hiking trails, boat rental and swimming. One of the big pluses of going high in the mountains in the evening is the sleeping temps are ideal, the drinking temps are pretty good too.