All-you-can-drink alcohol packages are becoming very popular on cruise ships. Several cruise lines already have a beverage package program in place. Now, Norwegian Cruise Line is the latest company to try out the system.

According to Cruise Critic, Norwegian is testing out an unlimited beverage package on select ships for $49 per person, per day. The package included alcoholic and non-alcoholic drinks.

"The program has just started its trial," a Norwegian spokesperson told Norwegian. The package it being tested out on different ships at different times.

A Cruise Critic member gave some details about the package. "They had it on the 11-day Sun cruise we just came off. $49 per day. You had to buy the first or second day for the entire 11 days. Everyone in the cabin had to buy it and they add 15% gratuity to the total. No tax," member Rochesterboatingdotcom said.

The package includes any drink that is under $10. All passengers of legal age in a cabin must purchase the package if one person purchases it in order to prevent sharing. 

Norwegian isn't the only cruise line to test out all-you-can-drink packages. MSC recently began an  alcohol-inclusive beverage package. 

Carnival Cruises started testing out a similar program in August. Their "My Awesome Bar Program" costs $42.95 plus $6.44 gratuity and can be used to order any alcoholic drinks $10 and under. 

Royal Caribbean introduced an all-you-can drink alcohol program on three ships last year. Celebrity Cruises adopted the program on all of their ships in 2010.