Re: Hope B.C.
There's a new RV campground in Sunshine Valley (about 20 min east of hope). Looks pretty basic (short perimeter trees for each site, etc) but may be worth a shot. It is pretty close to the highway though.
A bit of a drive, but worth it particularly mid-week, is up to Chilliwack Lake. Unserviced Provincial sites, but a beautiful lake and some great hiking.
17' Plan A, '05 Nissan Frontier, canoe, dog.