The wording below is taken directly from the email and are in no way my words.
Carnival is saluting our troops with special savings of up to 20% for active and retired military personnel.
Your special discount extends to friends and family traveling with you, which means, you can book up to two additional staterooms for the same price as your military stateroom.
You've earned some fun! This offer is good for selected itineraries cruising through April 30, 2011. So don't wait, book today! Offer expires November 30, 2009.
Contact your travel agent or call 1-888-CARNIVAL and use fare codes - 1st cabin PM2, and 2nd & 3rd cabins PM3.