Pat, We don't have a
ParkLiner, but depending on the design of your water inlet, you might want a little funnel or pour spout to make sure more water goes in the tank than out on the ground. In the future, for campgrounds with a water hydrant at each site, I'd recommend: 1) a "Y" valve if you want outside water for your pets, spraying off muddy hiking boots, etc., 2) a water pressure regulator, 3) an in-line water filter (I know some will debate this, but the first time you get "bad" water, you'll appreciate this; make sure to run some water through a new filter BEFORE hooking it to your camper to flush out the loose carbon/charcoal powder), 4) 25' garden hose suitable for drinking water, and 5) a 90 degree elbow so the hose won't kink under its own
weight when you attach it to your camper. All of that is available at most Wal-Mart stores at a reasonable price (usually in the Auto section rather than camping; that's where they stock that special RV toilet paper, too, go figure).
Oh, and back to Algonac, don't forget a comfortable lightweight travel chair (and bug spray) so you can sit outside and enjoy the evenings waving back at all the other friendly campers passing by. And did anyone else remind you to pack your camera to capture the memories...