Of all the times, all the cruises, and all the possibilities, you two chose the same EXACT cruise? That's pretty amazing! Congrats to both of you, enjoy your birthdays and enjoy talking Yorkies!
VacationsToGo.com has some really good deals on cruises (for those that haven't booked yet). You have to register to see the price, but it's quite quick to register (put in
test@aol.com as Already a Member or just use one of your spare or junk email addresses)... Looks like it's as low as $579 per person for an inside cabin. Jamaica, Cayman Islands, and Cozumel sound like great fun! (and no, I don't have any affililation with this site at all, just have heard great things about it from friends).
http://www.vacationstogo.com/fastdeal.cfm?deal=18975