Just experienced our first Non-refundable campground

I thank everyone for their responses. I didn't really want this to be a "you booked it and knew it so eat it" post, I simply wanted to know what others think about such 'a rigid policy and if it is that common.

The policy stinks but it is what it is and is completely understandable. If these places want to stay in business they must protect themselves. It is very common in resort and heavily traveled areas as well as those with short seasons.