I'm going to be taking my 90 year old grandma on a cruise for the first time in 2 months. I am really excited, but nervous at the same time. She is wheel chair bound and I'm just wondering how accessible the boat will be for her. Also, she lives in a nursing home and so she has constant attention at night. On the ship, she will be staying in her own room. I'm considering getting a medical alert bracelet for her so that I can sleep with peace of mind at night while cruising. Does anyone know if something like that will work on a boat? Has anyone purchased for alert one? I want a review before I buy anything. Thanks for any advice!