@SabotageTheTruth - Ha-ha, yeah the reference was mostly deliberate. I love 80's trailers, old enough to remember them too!
@La_Liz - Thanks so much for the advice. Will definitely take heed and get a compact RV because Highway 1 is a must. We're hoping to camp in Yosemite for a couple of days to go hiking but don't know much about the area at the moment - any tips for the national park, it all looks stunning.