They are ‘Caribbean Coast and Ancient Ruins,’ a seven-night round-trip from Miami on Seven Seas Navigator that departs March 6. Up to 61 excursions are included on this voyage that calls at Honduras, Belize and Mexico.

‘Casa Rosada to Sugarloaf’ is a 10-night cruise from Buenos Aires to Rio de Janeiro on Seven Seas Voyager that sails March 5. It calls at Montevideo, Uruguay and Brazil’s Rio Grande, Porto Belo, Santos, Ilha Grande and Buzios, with an overnight stay at Rio de Janeiro. Up to 22 excursions are included.

‘Bermudian Traditions and Celebrations’ is a 14-night sailing from Miami to Barcelona, also on Seven Seas Voyager, that embarks April 5. The ship will visit Bermuda before crossing the Atlantic and calling at the Azores, Portugal and Cadiz, Spain. Up to 30 excursions are included.

Book by Jan. 6

By booking one of these voyages between Dec. 1 and Jan 6, Seven Seas Society members double their savings and loyalty nights per person and get $1,000 shipboard credit per suite and a surprise gift.