Crystal Cruises - Crystal Harmony from $950 per person Inside cabin or $1,140 Oceanview (port charges included) .

Last Minute Luxury 7 day cruise to Mexico & the Bahamas sailing roundtrip from Ft. Lauderdale.. Ports: Key West, Gulf of Mexico, Cozumel, Gulf of Mexico, Nassau, Freeport, Ft. Lauderdale. Sail date(s) - 10/24/04, 10/31/04. View itinerary

A little earlier than you wanted, but luxury, great food and amenities and very few kids.

It was sent to me by Icruise.com. If you can't get it to pull up, IM and I will try to send you the link.

Otherwise, Vacationstogo.com is a great place to find bargains. If you want to sail on Seabourn, they are running some great specials to Central America/Mexico/Caribbean. Vacationstogo has most of Seabourns' specials listed.

Stay away from NCL, RCCL, Carnival, Disney. You will find many more children and from your specs in your post, an atmosphere that is not what you want. Try Celebrity, Holland America, or one of the Luxury lines.