Is KM Resorts for real?

I have never heard of it. Cannot imagine campgrounds that do not want to be listed or known. Most would want to be listed as they join to gain additional business. We use Passport America a lot when we are traveling. There membership fee is $44 and campgrounds are 50% off. Most are great for an overnight at least. Some do have periods of time the discount is excluded, such as during snowbird season. Each park stipulates what days, how many days, year round or only certain season, but there are 1800+ parks in the directory. You can view the listings on line without being a member if you want to check it out.