Travelzoo’s Top 20 of the week includes a five-day Caribbean cruise on the Costa Atlantica, departing Jan. 2, 2011, for $399 per adult, based on two adults travelling together, and children are free. Thus, a family of four can cruise for $798 before taxes.

Longer itineraries are also included in this promotion. Sailing from southern Florida, the Atlantica offers seven-night cruises for $499-$549 per adult on Nov. 7, 14, 21 and 28 – with $50 onboard credit and the same kids sail free offer.

All dates in this offer also receive 15 percent off shore excursions. Other cabin types, including balconies, also have been discounted. The offer is by Travelocity.