Been there, got that (now well used) Federal/National Parks lifetime seniors pass 11 years ago. 
  Also have a FL State Park pass. Still valid but needs renewal this fall.
  Both passes admit everyone in the car.
  Retired Military ID gets us into many other military, Fed and state facilities including camp grounds, px, etc..
  Also have NC hunting and fishing licenses. They send out free annual info on fishing and hunting laws and changes, and free admittance to classes and seminars, etc..
  Years ago, while camped for a few winter months on the Key West military campground, my wife and another military camper gal wrote a schedule on Freebies in the lower Florida Keys.
  Everything from art festivals to concerts to daily/weekly Happy Hours serving free food, to how to get a legal locals' ID and pass. Once done, the gals updated it occasionally, and handed it out to incoming campers till we left. My favorite was Boston Billy's on Duval St. He served free beer and Hors d'0uvres to military and  locals for an hour or 2 on Wednesday. He would not serve you freebies (ever again) unless you tipped the waitress or bartender each time they served you.. uw |