Janchappe

Greetings, I am looking at the 3 year Life at Sea world cruise. If I am a passenger and have paid in full for my cabin for all 3 years, then is it possible to take a vacation from the cruise ship, that is - to disembark during the course of the cruise and then reembark (catch back up with the ship, return to my cabin) at a later port/date during the cruise? Any idea what kind of additional fees (if any) does Life and Sea charge for doing this (if any, order of magnitude). Thank you Janice