Those are the requested amounts and that does include the teens. They really do work for those tips, I've never even thought not to include kids when they cruised with us, the staff does just as much or more to ensure they are having a good time.
I set the tip money aside and just stash it in the safe, so its all ready when its tip night.
If you also do excursions, those people will also need to be tipped, bus driver, tour guides, etc. Also the porters at the pier that will take your luggage onboard, tips for room service since its not your cabin attendant...