Have read all about the refillable mugs onboard. However, we just received our cruise documents and it outlines a Soda Package but doesn't comment on refillable mugs. The document specifies that each participant shall receive a unique identification sticker that will be recognized at any bar location for unlimited sodas. Cans are available at Castaway Cay because they don't have fountain sodas. $16 - for the four night cruise and $12 for the 3 night. I am curious to know if this has always been the policy or is this to replace the mug policy? Our cruise is July 21 on the Wonder. 

