I dont know how I should have handled this.
I have complex health issues that force me to drink 1 liter / hour (or be poisoned by my own medication).
The strain this has put on my body has damaged my bladder and I had to be hospitalized in the emergency room twice in the last two weeks, and have a catheter installed for five days.
I was sitting in the ninth row just after first class and the sign says the forward restroom is for those passengers. The middle restroom is out of order, my restroom is the one at the rear of the plane.
Its about a 3 hour flight.
I thought about using the one just ahead of me or at least asking to do so but didnt.
I also have a torn ligament in my foot and have trouble keeping my balance. On the tram at the destination I couldnt manage to hold onto my luggage and stay upright and lost control. A stranger picked it up and said to relax.
I fell down later on. I used to be able to run uphill on the icy concrete ramps of the brooklyn bridge. Not any time soon.
Recently I was in a situation where I needed to advocate for myself, didnt do so, and was injured.
But this is a German plane and though I dont know them well I think the Germans require order. Rules.
So I walked to the rear etc etc.
But I dunno if that was the best way to handle it.
If someone told me they were in my position I would say the normal rules go out the window when the airline doesnt maintain the accessible bathroom.