Passport America, worth it or not?

Seems to me that an empty Campground is much like a empty Cruise Ship....No one in the site/cabin = No income and no possibility of income. We all know Cruise ship's like to sail at full capacity even if little to no profit is being made hence the last minute deals( I'm very familiar with this, My wife cruise's often while I Baby sit the dogs and she has gone on Cruise's for as little as 99.00 for a 7 day cruise.) This is not to say a Ship doesn't have one up on a site...the ship has alcohol, casino.....heck, even dining in upscale eateries cost nowadays. Allowing someone to stay at "your" campground at a discount may provide good word of mouth advertising and good PR..IMHO

Anyways, back to the topic, I still think PA is a good deal for what it is, that's why I keep, it just in case.