Still going over my new to me fountain and wondering how the couch comes out down below. The centre cushion obviously just lifts up for the portapotty but the side cushion seems to be somewhat secured. Without force, I was wondering how it comes off and what if anything is under the seat? I figured there may be some extra storage under there.

They don't come off, they are screwed down. If you fish around in the seams of the cushions you'll find the screw heads so if you ever have to take them off to recover you can get them off.

OK. Also, am I able to screw in the side carpet under the side seat. I want to make a ledge so I can fill in the horse shoe area with a cushion to make another spot for a small sleeping area.

i was wondering this on my 27 I was going to pull them to clean them nice info

That's not something Iooked at so maybe someone else can chime in.

Big stringer in there, so yes. Most use two of each 3/4 pole holders and support the cushion that way. You shouldn't need a whole ledge.