It's neither. Right now the Windstar Cafe is where you can buy the Specialty coffees - there is a charge but the pastries are FREE.
After the ship comes out of dry dock in April, the Windstar cafe will become the Pinnacle Grill Bar and the Windstar Cafe will be re-located to the Crow's Nest along with the Internet Computer section......it will then be called The Explorations Cafe, which you will find on all the other ships.
The Buffet is located on the Lido deck, aft. All food here (including the ice cream bar) is FREE..... there is a charge sodas, wine and beer. There is a hamburger stand mid ships near the Indoor pool and a taco bar, although on our recent cruise, they didn't open the taco bar until around 2pm.
Check out HAL's web site, www.hollandamerica.com. Click on Fleet, then Zuiderdam and you will see the deck plans for both before April 3, 2008 and after April 25, 2008.