Well yes and no @DeanneB. True, NCL's Unlimited Open Bar Beverage Package (if purchased outright) is currently priced at $99 per person per day, excluding gratuities, and will increase to $109 per person per day in January. Now let's compare the outright price of an equivalent beverage package on RCCL and CCL.
RCCL: The Deluxe Beverage package costs between $48 - $79 per guest, per night (excluding gratuity) if purchased in advance. The price will be higher if purchased onboard, usually between $63 - $89.00 per guest, per night, again excluding gratuity.
CCL: CCL's Cheers package is $51.95 to $54.95/person/day (excluding gratuity) if purchased in advance and $56.95 to $59.95/person/day (excluding gratuity) if purchased onboard.
So yes, on the surface, NCL is more expensive. But, a majority of NCL's clients receive their beverage package as part of a bundled "Free At Sea" package for the price of $19.80/person/day, which is equivalent to the 20% gratuity they charge on the package. Looking more deeply:
Only NCL knows what beverage package cost is buried within every one of their cruise fares, if any.
Individual drink pricing varies between the three major cruise lines, so it is tough to compare on a per drink basis.
RCCl's package covers drinks up to $13/ea; NCL's up to $15/ea and CCL's up to $20/ea with a drink limit.
And then there is the fact that NCL, CCL and RCCL have fundamentally different pricing models for their cruises and amenities. Thus far, analysts tell us NCL is doing better financially when compared to their competition, still achieving booking goals despite higher pricing. That is good for shareholders, but maybe not so good for casual cruisers.
So this a bit of an apples-to-oranges comparison. I maintain that cruisers ought to evaluate the cost of their cruise vacation based on the total of the costs, direct and indirect, vs. the experience they will receive, to assess the 'best value' for their cruise dollar. Evaluating this solely upon the beverage package price (which I know you did not assert) is false economics IMHO.
Cheers!