unless you have someplace to catch the antifreeze(assuming that's what you did to winterize), you aren't allowed to let it run onto the campsite ground.
i think nearly all campgrounds would frown upon that.
you really should do it at home and then spend a night in Camp Driveway before you leave.
many owners, especially newbies, that don't do this, find out that when they get to the campground, things won't work.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC