Three teenagers! Geez. Just jump overboard (only teasing). You need to do some pre-trip homework and post some of your thoughts about what your family would like to do and see in these ports. With teens, we have always felt its a great idea to let them do their own research and make suggestions as to what would hold their interest. Keep in mind that if you book cruise line tours for a family of 5, the cost might be a real shocker.