Hi Ann, my daughter worked for Norwegian Cruise Lines on The Pride of America cruising the Hawaiin Islands. She had a passenger with a NxStage.(I think it was NsStage) Before passengers boarded, the delivery company brought all the supplies to the cabin. I am not sure if they supplied the machine or if the passenger brought their own. (That could be hard to do.) My daughter said it all went well. Because she knew about dialysis, she was glad they were in her section and she understood what they were dealing with. Talk to you social worker at the clinic and also, talk to the cruise lines. And as I tell everyone, don't wait for tomorrow---go on that cruise now! With some pre-planning, you should be able to make it work. BTW, she is also a member here---AlohaBeth, so pm her if you have questions