Yes.  You can opt for automatic monthly payments for both the Affinity Cruising group participation fees and for the Carnival Cruise Line Cruise fare.

Affinity Cruising Group Participation Fees are payable in 6 monthly payments of $14.00 per person when using automatic recurring payments.  This includes a small service charge.

In both cases, the full amount has to be paid off by the final payment date, which is approximately 3 months before the cruise departure date.  The number of months between booking and final payment date determines the number and amount of cruise payments.

Deposit amount varies by specials available when you book, and can be as low as $50 per person.  The normal deposit required by Carnival is typically $250 per person.