Found this on another forum, Disney's response to another member
Thank you for contacting the Walt Disney World® Resort.
Guests age 21 and older may purchase alcoholic beverages with a valid
photo ID such as a State Driver's License, State or Government issued
ID with picture, Active Military ID or Passport at the following
locations (including both Walt Disney World and Operating Participant
locations):
All bars and lounges (including pool bars)
Beverage carts
Quick Service locations
Any outdoor food locations where alcohol is served
Epcot Food & Wine Festival kiosks
Catering bars
Stadium vending
Please note that if your Driver's license or desired use of
identification does not have photo and a date of birth notation as
standard parts of the form of the identification it will not be
acceptable when trying to purchase alcohol across the Disney property.
If you have questions or need further assistance, feel free to contact
us.
Sincerely,
Indiana Larsen
WDW Online Communications
This could just be inconsistency but I'm lead to think because of the paragraph explaining your photo and date of birth, that this might be a change to what they had previously replied.
Absolutely brilliant if so as
State or Government issued ID with picture
A UK Government issued photo card driving license falls in that catagory.