I have had to get towed a few times when I got stuck. One time the poor adjuster busted up laughing when he read my E-mailed claim (Well I worded it to have just that effect) He approved it too.
It happens. Even in a campground (the one I'm in now) So now days to avoid getting stuck I always show up with a Cinna-bribe (really a joke, Cinnabon is just down the road on my way so....) Always get good sites too.. Of course it helps my favorite site (one I"m on now) is clean. level 50 amp. pull through. no sewer so nobody wants to park here.. But that don't bother me.