Did you happen to see the "Is it worth it." examples we have posted on this Cheers information page:
Cruising Earth - Carnival Cruise Line - Cheers Beverage Program
If you are a straight domestic beer drinker ($5.75/drink plus gratuity) it will take almost 8 beers (in a day) to break even. Then you will basically get beers 9 through 15 in a day free. Saving you up to $49.79/day.
If you are a Grey Goose Martini drinker ($9.95/drink plus gratuity) it will take less than 5 (in a day) to break even. Then you will get martinis 6 through 15 in a day free. Saving you up to $122.24/day.
[TABLE="class: grid, width: 525"]
[TR]
[TD][/TD]
[TD]Domestic Beer[/TD]
[TD]Grey Goose Martini[/TD]
[/TR]
[TR]
[TD]Cost of 15 with Gratuity / Day[/TD]
[TD="align: right"]$99.19[/TD]
[TD="align: right"]$171.64[/TD]
[/TR]
[TR]
[TD]Cheers Program with Gratuity / Day[/TD]
[TD="align: right"]
($49.40)[/TD]
[TD="align: right"]
($49.40)[/TD]
[/TR]
[TR]
[TD]Possible Savings / Day[/TD]
[TD="align: right"]$49.79[/TD]
[TD="align: right"]$122.24[/TD]
[/TR]
[/TABLE]
Most everything else, price wise, will fall somewhere in between.