Shower Walls?

Bought a used camper. The shower has wallpaper for walls. It does have a fiberglass floor pan that is a few inches on the sides. Was the intent that the wallpaper get wet during a shower? I will have to hang a shower curtain over the door, but wondering if curtain needs to go 360 deg around. The ceiling has a 360 shower curtain ring, but maybe that is for pushing curtain out of the way.
I see other campers with showers that just have what looks like wall paper walls. It is more normal to have fiberglass walls, but I see both in different units.
I am wondering what mine was.