Anyone have any comments on these excursions offered by RCI? They both look great but are rather long. So we would like pick the best one. Very interested in opinions.

Thanks in Advance.
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Majestey of the Seas 8-3-1997
Carnival Valor 7-16-2006
Adventure of the Seas 7-29-2007
Carnival Dream 3-20- 2010
Serenade of the Seas 6-26-2011
Oasis of the Seas 6-30-2012
Carnival Breeze 6-28-15