Royal Caribbean International is piloting a self-service draft beer tap on the Freedom of the Seas, the first such service the line has offered.

The taps are located around the pool deck and the Windjammer buffet restaurant and serve the Stella Artois brand, a Royal Caribbean spokeswoman said.

The taps can only be used by guests who buy the Ultimate, Premium or Select drink packages. After buying the package, guests get an authorization card that connects to a radio frequency identification (RFID) device in the tap. That assures that the guest has purchased a drinks package.

The tap/card combination has a timer to ensure the tap does not pour continuously, and to provide a time limit between refills, Royal Caribbean said.

Self-service taps have been featured on some Carnival Cruise Line ships, including the Carnival Sunshine, and were pioneered by the German Aida brand.

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