Re: Russ&Cara
For Washington - take a look at the state parks. There are some great locations. They have a great reservation system too - as long as you make plans far enough in advance for popular parks & times.
http://www.parks.wa.gov/parks/
Some of our favorites:
Maryhill - on the Columbia River about 100 miles East of Portland, OR
Kalaloch over on the coast (National Park Service) - only a few "big rig" spots, but great beaches
Fort Warden near Pt. Townsend - also on the water, lots to do and see here!
Lake Wenatchee over near Leavenworth
Our friends also recommend Pearrygin Lake near Winthrop
Our rally last year was at Pioneer Trails RV park in Annacortes - and it was a GREAT private park, lots of large spaces, and options for being under the trees or out in the sunshine.
This year our rally is in Twisp at the Riverbend RV park. I have complete faith in our leaders (SJH) that this will become another favorite location.
While in Bend, OR, we stayed at the Crown Villa RV Resort. VERY nice private park.
We haven't been to MT yet, so I'll be taking notes from this tread on some recommendations, too!
Have Fun!
-Tina