Luggage express must have changed. We used back in 2010 shortly after it came out. And you could report to the main stage and do early debarktion. But were free to debark at your pleasure.
2004 Carnival Imagination Grand Cayman/O.R. Jamica
2006 Carnival Valor Eastern Caribbein
2008 Carnival Liberty Exotic W. Caribbein
2010 Carnival Spirit Mexican Rivera
2012 Carnival Freedom Exotic W. Caribbein