Vancouver to Alaska Cruise: Where to leave motorhome?

Although not vancouver this campground north of seattle is know for this
"You can be as busy as you want and then come home to a greenbelt haven. We also offer storage sites - with electricity - to park your rig while you take a cruise. We do fill up in summer, so please book your site early. We welcome all rigs - big or small."
Lake Pleasant RV Park Bothell Washington

http://www.goodsamcamping.com.s3.amazonaws.com/gsparks/LakePleasant/LakePleasant.html