I was going to say that I didn't think they should do that. But then I realized that if you could make you reservations ahead of time, then you wouldn't have to worry about it or waste time on your first day making sure you got up there to get your time in. Also, I guess it makes if more fair as now the best times are not going to get sucked up by those that were able to board early.
Sounds like a good idea. At least to try.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013