[Kidkraz]

Dave, sorry I didn't see yer question before.
Yes, there's an upper inside bracket on the wall. That's the top anchoring point for the toilet. As TMM says there's four screws for the floor.
When I installed the outside trim panel the instructions say to have wood blocking to drill into, I just used some wood shims and pulled out enough of the Styrofoam to fit them in. They also tell you to sit on the toilet when you mark the wall, and I also moved that top bracket up just a very tiny bit so the back of the toilet was completely engaged onto it. The toilet seat swivels 180 degrees to the front and aft. I keep mine pointed to the back bumper to fit more things in the bathroom area. Below are the fittings I used when I connected up the water line. I went under the bathroom sink verses the outside shower. Good luck

36” flex faucet supply line- 3/8 X 3/8 compression
Hose barb 3/8 ID X ½” MPT
Small hose clamp for the blue hose
Comp to straight ½” X 3/8” OD
3/8 X 3/8 X 3/8” T-fitting