It is a 1 credit table service buffet now. Character meal for breakfast, not a character meal for lunch or dinner. Check out allearsnet for reviews, menus, etc.
If you're looking for a good cs in AK go to Flame Tree, great food and the seating areas are beautiful, there is one area that has a great view of Ex. Everest.
The conflict in information you're finding probably is because Tusker House was formerly a counter service, and is now an all-you-can-eat buffet, which goes for 1 table service credit on the DDP (or $19.99/lunch, or $26.99/dinner, if you're paying the old-fashioned way).