Okay, nothing like having a dead van that won't start and a Full Black Tank.
I've always known l can hold my bladder for a long time if need be. My friends and l call it "waitress bladder", since when you work in a restaurant (which we have done) sometimes there just isn't time to go 'relieve' yourself, so you hold and go.
I've done whole shifts where l don't even think of going to the bathroom until l have a minute to breathe.
Where am l going with this?? I think my beat my own personal best last night. I held it for 13 hours. It wasn't that bad, and l could have visited the facilities earlier if l needed to. And then of course, there is always the "emergency" measures.....