How often are campgrounds 50A only?

cdevidal wrote:
Is it very common for a campground to not have 30A and 15A outlets, only 50A outlets? Just wondering if I should buy a 30A female to 50A male adapter such as this.

I'm sure they exist, but I've never seen a 50a only site. I do carry the 30a to 50a adapter you mentioned for the reasons noted prior. I think I have used it once in 12 years.