Travel agents will have the opportunity to earn as much as 15 percent commission on Carnival Cruise Line bookings in 2019 as the cruise line's popular "AMP Up Commission Challenge" returns for another year.Agents who opt-in to the program this month can increase their commissions following a booking qualification period taking place during Wave Season—January 1 through March 31, 2019. Those who reach set booking goals during the aforementioned window will earn the increased commissions of up to 15 percent on new Carnival Cruise Line bookings made from April 1 to December 2019.MORE Travel Agent Participating agencies must make anywhere from 20 to 125 bookings during the Wave Season window to qualify for higher commission levels between 11 and 15 percent:—15 percent commission, 125 bookings—14 percent commission, 88 bookings—13 percent commission, 63 bookings—12 percent commission, 38 bookings—11 percent commission, 20 bookingsOnly new bookings made and fully deposited or paid in full between January 1 and March 31, 2019 will count toward the goal with the exception of free staterooms, reduced advisor fares and full-ship charters.Registration opened Monday and is available through December 23, 2018 on GoCCL.com. Once the agency's information has been verified, an enrollment confirmation email will be sent by December 28, 2018."Last year our travel agency partners embraced the AMP Up Commission Challenge and exceeded their goals beyond our expectations, so we brought it back this year to give even more agencies the chance to benefit from this program and earn more commission," said Adolfo Perez, Carnival senior vice president of sales and trade marketing, in a statement. "Wave is the busiest and most rewarding booking period of the year and we’re excited to provide our travel partners with additional opportunities to increase their earnings."The AMP Up Commission Challenge is a part of #thelist, Carnival Cruise Line's comprehensive program to support travel advisors.