Supra.

I have a neurogenic bladder.
I've upgraded from intermittent catheter to a suprapubic catheter.
Now, I can (and must) drink and drink and drink and Never worry about where the restroom is.

First thing they did at the urologist was to send us into the bathroom so I could provide a urine sample. Then, an ultrasound of my bladder showed that I had incomplete emptying. So, I was sent home with A few samples of Vesicare. Next time, I was sent home with a intermittent catheter sample package from a company and a prescription for Vesicare.

I could not do the intermittent catheter myself .
I am lucky enough that my husband did this for me.
After a year or so, and having a bladder infection,
I reached out to the urology office and asked for an indwelling catheter.
After six months, an indwelling catheter becomes too painful to continue using, as it is changed once a month.
So, I upgraded to a supra pubic catheter.  Now, I can drink as much as I like, whenever I like and never need to go to the ladies'  room.
(As long as the tube to the bag stays clear).