It's good fun...
It is a blast to do. My kids love it. What better than actual treasure hunting and finding the treasure. My 7 year old son operates the gps and my 2 year old daughter loves to tag along and hunt. We have hiked for miles in the appalachian mountains finding caches. Walked beaches in NC and SC, hiked mountains in Pennsylvania and Maryland and it is great stuff. What is so great about it is it takes you to local spots that you would never know existed. Locals hide them in there favorite unknown getaways. We went to an ancient stone causeway in NC at Fort Fisher where US 421 begins. Never would have known what it was otherwise. Found a nudist island in NC (not that great, unless you like the nude male body). Some here in Kentucky you have to have an extremely capable vehicle to get to. If you don't like the great outdoors, don't like hiking, don't like hunting and solving riddles or finding clues, don't like discovering a bit of history and don't like driving the road less traveled then yep, it's not much fun. Some of the caches have been hanging in trees, tied to limbs. Some are really hard to find, some pretty easy. Kids get to trade stuff. Sometimes they get some pretty neat stuff. Lot better than McDonald happy meals anyway, not that that says a whole lot. I recommend it, it is a good time. I probably would not do it if I didn't have kids, that is what makes it so fun for me. Cheers.
Kevin