Well yes, yes I do.
It always makes me want to laugh hysterically when someone asks me this.
Really? Do you think I'm a magical creature that doesn't make waste? Do I smell so bad you assume I never shower? (Yeah. That's right. I alluded to the fact that I use a toilet. Get over it.)
I think what they really mean to ask is, "What's your bathroom situation?"
I have a marine toilet, commonly called a head, on board. (Remember when I had to rebuild it?)
However, because my marina is awesome, I live RIGHT NEXT to the bathrooms. There is one boat that's slightly closer, but I couldn't begin to keep my boat in his slip (he's on the sea wall and my boat is too short for that!)
I have a personal access card to use one of four (or two in the winter) bathrooms.