Yes, the Awahnee Hotel is very nice. A few years ago some friends and I drove up there on New Year's Day. On the way up we had lunch at Tenaya Lodge (which is actually not in Yosemite), we strolled around the Awahnee, drove around the park and then had dinner at the Wawona Hotel. The thing that was so remarkable to us at the Awahnee and the Wawona is that the lobbies and restaurants were filled with groups of people sitting together, eating, playing games, talking -- not a single television in either place. What a difference it made in the atmosphere!
Ah, yes the Elderberry House. I've never been in the Chateau, but I had dinner a few years ago in the Restaurant. It's a 5-star, prix-fixe, French restaurant. Not my thing, actually, but at least I can say I've been there.

(It is an incredibly beautiful restaurant, I'm just not into highfalutin food.

)But....... I have
the best story about it.

I will just give you the Reader's Digest super-condensed version. A guy I had been writing and talking to flew in from out of state to see me and wanted to impress me with his knowledge and love of gourmet foods and restaurants, so we went there. Let's just say it backfired on him. I like to joke and say that, even now, you can see his blood and sweat stains in the parking lot.
Needless to say, that weekend was the end of it!