There is one Four Seasons and it is in midtown. There are two Ritz Carltons. One is in Buckhead - and one is downtown.
As for shopping - the most extensive general (high end) mall shopping is near the Ritz Carlton in Buckhead (Lenox Square and Phipps Plaza). But there are places I like near the Four Seasons as well. For example,
Retromodern is one of my favorite contemporary design stores. It's hard to go wrong with either midtown or Buckhead during a weekend trip since the traffic isn't that bad on the weekends.
I will call about the chocolate buffet. It was offered over the winter - but I'm not sure whether it will be on the late spring menu (gets pretty hot for chocolates in Atlanta by then). Robyn