I was going to suggest a shower/potty tent. I used those with my popup since it didn't have a potty. I always wanted to try & figure out a way to use the popup's outdoor shower with it, but the hose didn't have the cutoff switch like the one on the Roo. The only way to cut off the water was with the taps. And since I was dry-camping at the racetracks, leaving the water running would have drained the tank in a hurry!
BTW, Paha Que makes a potty tent with zippered openings on three sides. You could use those for the hose. These are a couple of shots of the one I had. The zippers run horizontally just under the rain fly. They allow you to hang clothes, towels, etc., outside the tent on the crossbars at the top & easily reach them.
I always liked the crescent moon on the door - so you know exactly what the tent is for. LOL!
Ann ("Older than springtime, younger than dirt.")
Molly, my rescued cockapoo, who loves camping
2013 Rockwood Roo 21SS
2003 Dodge Durango SXT w/full towing package