You have a little fudge factor if you let the butt of your camper hang over. I did notice some people there who had stabilizing jacks on the dirt so they seem to allow this.
They are however extremely strict about having your wheels on the pavement. Make sure all of your wheels are on asphalt. No fudge factor on that.
Another thing to keep in mind is that as a fallback you can park your truck in Curry Village's parking lot and take the free shuttle back over. Or walk it's not far. Not ideal but if you have a problem it's good to know that you have that option. Sometimes when you are squeezing in you will find that you can shoehorn the trailer into the site but once you do there isn't room left for the truck.
