OK, you got me. It used to state that on the old website, and before the alcohol policy changed. And it was 22X1X9 (got that wrong - guess I shouldn't have skipped that cup of coffee this morning). Here's what it
used to say:
•-Beverages must be packed in your carry-on bag—which must not exceed 22 inches wide, 14 inches high and 9 inches deep in dimension
But that specification isn't there any longer. So, I guess a carry on bag can be any size.
Here is the official word from
DCL as of last week when I emailed them (I was asking about bringing non-alcoholic drinks onboard):
As for bringing beverages onboard,
Disney Cruise Line does not prohibit
Guests from bringing non-alcoholic bottled beverages, such as water or
soda, onboard. All bottles must be sealed/unopened and fit into your
carry-on day bag. Your carry-on bag must not be larger than 9" x 14" x
22".
Please be aware,
Disney Cruise Line reserves the right to remove fragile
items (including beverages) from checked luggage. Beverage containers
are considered fragile and in checked luggage have caused damage (e.g.
carbonated cans "explode", glass bottles break). For this reason, all
fragile items and beverages must be hand carried onboard the vessel in
your day bag and/or carry-on.
As far as coolers, large coolers may not be brought onboard. However,
small personal-sized coolers for the purpose of housing medications,
baby food, baby milk, or items related to dietary constraints are
permitted to be brought onboard. These coolers can be no larger than 12"
x 12" x 12" and can only contain the above items.
As always, the above is subject to change without notice.