If we are taking our time, I will pop up when we stop at roadside rest areas. We will use "public" facilities sometimes, but there nothing like the comfort of "going at home", even if it's on the road.
Yes, and yes. Not sure if you mean using it for a potty stop, but that's too much time stopped for us. We use public facilities in those situations. When we stop for the night we use the terlit and don't dump it until it's ready. Sometimes we haul that stuff hundreds or even a thousand miles before dumping!