I've stayed at the Ahwahnee many times -- it's sometimes the Thanksgiving meeting spot for my extended family. I love the place. I agree with most but not all of the above comments.
Cold rooms: I've never experienced that, Need -- sorry you did. I can't recall hearing anyone else complain of it. I think you just had some bad luck.
Cottages vs. rooms: I guess this is subjective, but my feeling is that you're not really staying at the Ahwanee if you're in a cottage.
Luxury: I agree that this is a not a luxury property like a Four Seasons, Peninsula, Ritz-Carlton, etc. It's not trying to be that, though. It's a gorgeous grand lodge in a spectacular setting. The rooms are comfortable but not opulent.
Restaurants: the cafeteria over at Yosemite Lodge is pretty good and has reasonable prices. The dining room at the Ahwanee is also very good, but it's a bit pricey. Maybe have one dinner there (reservation recommended).
Bottom line: the Ahwanee is a very special lodge. If you can swing it financially, stay there. For anyone unable to do that, maybe arrive in the Great Room late afternoon, read a book near the fire, walk around the property and have dinner in the main dining room. Dress up a bit. They no longer require jackets for men (they did a few years ago), but it's still common to see half or more of the men wearing jackets at dinner.