Hi Tony.
I am not sure if it still is so, but sometime ago I worked on a renal unit as an RGN. I remember that there are camp sites that are set up for taking people with both types of dialysis. It would be worth speaking to the renal unit, or the Nurse Practitioner for details. I am unaware of any abroad. I am sure that one of the kidney research websites would give you information too.
Good luck,
Dave