From my research, it looks like they removed it 😕 In no way am I paying $65 per day for a plus beverage package to just drink soda lol.
I did manage to find this on the Princess website:
"Guests are also prohibited from bringing water, sodas and other non-alcoholic beverages on board that are packaged in bottles. A small quantity of non-alcoholic beverages (i.e., sparkling water, sodas, juice, milk) packaged in cans or cartons may be brought on board on embarkation day, only if carried on in Guests’ hand luggage (not in checked luggage). A small quantity is considered a maximum of 12 sealed, unopened cans/cartons of 12 ounces each or less per person. Guests will be asked to discard open beverages in plastic containers prior to boarding."
So I guess there's that. Might as well do that to save some money.