You can use any UTS to get to the Kids Cabins area and once you are there follow the path back to the outhouse by your cabin, get on top of the room and you should see a net and a Psi-Card you can get to with your levitation ball. Above here is a ladder you can climb up to get a full Psi-Challenge Marker.
I don't know how I missed this before, but go to the outhouse and press 'Y' in front of it to open it up, a card sits inside.
Next let's head over to the Main Campgrounds. Right when you enter to the right is a super obvious Psi-Card. Near the bottom of the ramp leading into the lodge is a speaker pole you can climb on, from here look away from the lodge and you should be able to see some far out platforms around trees. Jump out here to where a Psi-Card awaits.
From up here there is a tight rope you can walk on to, as you start heading across it you'll get to a tree on the left, look left right before it to see another Psi-Card. At the other end of this rope you'll find yet another card. Now in the middle of the parking lot area here is a card on top of the piece of wood and then start heading back toward the main lodge and once you are out of the parking lot head left and there is an outhouse with the final card of the area.
Now into the Reception Area. In this area if you take the left path all the way past pride rock to where it ends you can get up on a log platform and you'll see a Psi-Card right in front of it which is now easily attainable with the levitation ball. You can now jump forward to another similar platform and then forward again to a grind rail. The rail will get you another Psi-Card then land you in a cave where another short rail starts with a card on it.
Now head down into the cave a bit where another card and a bear await. Down into the cave more for another Psi-Card.
At the beach house and lake if you stand down by the UTS log and look out towards the lake and to your left is a large rock, on top of this is a full Psi-Challenge Marker. To get it you'll need to use the ledge with the path on it right next to this rock and your levitation powers to jump up high enough to get this marker.
..To Be Continued..