I did that once, of course it was unpaid.
I gave the the new employer a start date that they thought was sort of late. I told them I had a planned vacation, my brother's wedding. They said just to start earlier and they would accommodate the time. If I couldn't cah out the vacation from the previous job it wouldn't have worked.
All I ask is a tall ship and a star to steer her by; John Masefield
Carnival: Glory 2004, Destiny 2008, Splendor 2009, Freedom 2011, Valor 2012, Dream 2013
Celebrity: Summit 2011
Princess: Ruby 2010, 2014, Caribbean 2013, Coral 2014, Regal 2014
Star Clippers: Royal Clipper 2015