Just curious about "Passport America"

Chekc their availability map. If there are campgrounds where you will be camping, you can usually save the money back in a couple 3-4 day trips. Availability of campgrounds in some area's is the only shortfall I have seen with it. Have been a member for 3 years and always got my money back in savings plus a bunch. Usually saves me about $50-$100 a year but I do look for member campgrounds when booking trips. Usually about 75% of my trips are PPA.