On another cruise line- my Dad was able to have dialysis set up for him on the ship... and he did it during the "at sea" day--- and had a great cruise- you just need to call and see what they have available. Also- if you explain to the MD's that she will be on a cruise... they may be able to set up a special sced. that week where she can go more before and after she gets back and "skip" while on the cruise...although they will give her a list of things to monitor in her diet and may change her meds slightly during the week... my Dad has also done this before. Anyway- he has now just had his 2 yr anniversary w/ his new kidney Good Luck- and remeber she can still have a great trip!