Carnival did offer this to large groups, so probably a regular PVP wouldnt know about it? Everyone in the group had to sign up for it and pay for it. Since some dont drink it didnt ever catch on. I wouldnt have wanted to pay that much, $36.50? or whatever it was per person if I hardly drink. Every person had to pay.
It was only offered to groups, not individuals. Iv heard lately Carnival has discontinued this offer. You might check with the group dept. Yes, it was offered for years.