We've done aft balconies on Princess. On Carnival there are some odd shaped cabins that have wider but not necessarily deeper balconies. Or example, on Splendor we has 7433 which wrapped around the aft service stairs.
A Bad Day At Sea [with power] Always Beats A Good Day At Work
Carnival: Glory 2004, Destiny 2008, Splendor 2009, Freedom 2011, Valor 2012, Dream 2013
Celebrity: Summit 2011
Princess: Ruby 2010, 2014, Caribbean 2013, Coral 2014