The policy has always been that personal alcohol was not allowed (other than wine), but it was not rigidly enforced. After the problems RCCL had over the summer with drunken passengers falling overboard, they tightened up on the alcohol policy significantly - at least in words. I do not know how strict they are at the embarkation port since this policy revision. In case your docs don't lay it out, here
is all the verbage.