Dresses For Formal Dinner Dresses For Formal Dinner On Royal Caribbean (Oasis Of The Seas) Cruise...?

Dresses for formal dinner on Royal Caribbean (Oasis of the Seas) Cruise...? - dresses for formal dinner

Dresses for a gala dinner at the Royal Caribbean (Oasis of the Seas) Cruise ...?

First at Oasis RC boat cruise on the sea in mid-January and must have 2 dinner (formal: suit and tie or tuxedo for men, dresses for women). Is it appropriate to dress for dinner?
Robes 1
Reception - http://s199.photobucket.com/albums/aa257 ...
Prev - http://s199.photobucket.com/albums/aa257 ...

Dress 2
http://www.simplydresses.com/shop/viewit ...

I also am 19 if that makes any difference.