Enjoy It While You Can is the song that cruise ship director Rowan Priddis (guest star Steve Coogan) sings aboard the Royalty Valhalla to mark the half-way point of the cruise. The song is a reminder to the passengers that the good times they have been having will soon end, which inspires Bart to try and make his family's vacation last forever. ("A Totally Fun Thing That Bart Will Never Do Again"). The song was written by Bobby Lopez