CQ - I think if you cruise Princess at spring break there will be plenty of teens, but you are an big RC fan you might be happiest there. With my kids older teenagers aren't on my radar unless they are annoying.
A Bad Day At Sea [with power] Always Beats A Good Day At Work
Alaska 2014 - haven't picked a cruise yet
Carnival: Glory 2004, Destiny 2008, Splendor 2009, Freedom 2011, Valor 2012, Dream 2013
Celebrity: Summit 2011
Princess: Ruby 2010, Caribbean 2013