Have done both and am currently towing my fwd RAV4 (does that make it a RAV2?) on a dolly. 4-down is easier and quicker, but the RAV4 is not towable 4-down.
I try to get pull-thru campsites when possible, but if not, I drop the car at the check-in office and the DW drives it in. When I get to the campsite, I stop so that the dolly is at the end of the campsite. I unhook the dolly and move it to the very back of the site with tongue facing forward so that when I back the motorhome in, the overhang covers the tongue leaving only the wheels and ramps (about 4 feet) sticking out the back. When ready to leave, simply pull forward a bit, hook up the dolly, load up the car and head out. Not too bad.