We are members of Passport America, Good Sam's, and KOA. Passport America does not usually honor the 50% discount on weekends, holidays, or if there is a rally in the area (such as the one in Perry, Ga when the FMCA rally was going on at the GA Fairgrounds) even though they had space available. And usually with Passport America, they will not honor the discount if you call for reservations. Typically you pull in and hope they have a spot. Also, the areas we tend to travel in, it doesn't appear there are that many Passport America campgrounds there (we're in TN). However we have a 6 week trip planned this September/October and are staying in either KOA's or Good Sam's and have reservations all made & confirmed. I see now where some campgrounds are now accepting AAA and AARP and give discounts for those memberships as well. Using Passport America 2 times will pay for your membership ($49 per year).
They are all good. I like being able to go online and see the Good Sam campground ratings before we make a reservation.
And for those of you heading South on I-75 around Lake Park, Fl (this is just North of the FL state line - I believe exit 8 - heads up! There is a nice campground on the right, Eagle's Nest but we were charged $42 and change for an overnight with our Good Sam discount. We found that just across the interstate, Camping World had bought the old KOA campground and is only charging $19.95 per night LESS your Good Sam discount. Full hookups, sewers, and cable. Guess where we will stay from now on for an overnighter.........? No pool but the campsites look good (not the ones up front -pull back around the lake area).