Not really much to see (as expected honestly). There are red and blue spray painted markers through out LTSP, but they all seem to be around the area where Taz Tornado, the little coaster and the airplane ride is. Just a few red circles near the bathroom/ Granny's House.
I'm not sure if these are always there (I don't remember seeing them) , but the back gate was open a bit and there was numerous cars parked. I tried to sneak to the open side of the gate, but just as I was walking towards it, an employee shut it lol. (ETA: I wasn't going THROUGH the fence, just wanted to get to the side that opened so I could see in)
This picture is through the fence.