I work as a caregiver for a quad. He is going on vacation and I am going along to help him out. He hasn't picked the location yet, but he's looking into a cruise. Since there is an age gap between us and he is traveling with friends we probably won't be spending the whole day together. Most of the help he needs is scheduled time in the morning and night. However...if he needs soemthing during the day...how can he get ahold of me? Cell phones don't work on a cruise ship, and I'm not going to sit in the room all day just in case.

Is there such a thing as a pager that you don't have to call? Kind of like a walkie talkie where it is independent from other things? You push a button and it pages the other person? Or any other ideas of how we can communicate? We might end up traveling to Mexico instead, and this would be helpful there too instead of relying only on cell phones.

Thanks!