They were enforcing the rule on the Explorer in April much to some passengers dismay. One lady was really getting loud with one of the pool patrol guys.
Maybe thats why the night life was a little dull, everybody had to get to sleep early so they could wake up at 6am and hog all the pool chairs.
Carnival Victory, 2003
Carnival Victory, 2004
RCI Explorer of the Seas, 2009
RCI Explorer of the Seas, January 2010