It appears Royal Caribbean's drink packages now include milkshakes at Johnny Rockets as part of the package benefits.
Recently we heard reports that guests were being informed that their drink package benefits included milkshakes at Johnny Rockets, and now we see Royal Caribbean's website has been updated to indicate that milkshakes are indeed included.
Recent email shared on Liberty of the Seas Facebook Group
Dining at Johnny Rockets still comes with an additional surcharge, milkshakes have historically cost extra on top of the cover charge. With this drink package policy change, guests with the Deluxe Beverage Package have the opportunity to enjoy milkshakes that are included with the cost of their beverage package.