Can they communicate via email? Unfortunately, I used to have a very, very needy boss, on our first cruise we communicated 2x a day via email & IM. I would log on at 9am, and respond to all his wants & needs, set up meetings, etc. and then log on again around 5pm. He also logged on at the same times & we were able to IM. It seemed to work, he was not all that happy that he could not get me the 24/7 that was used to but I was able to make it work.