I'm registered for Delta's (old) Skymiles Dining... and let me tell you what a pain in the rear end that is! Some restaurants that were listed in the program no longer do so, and even so it was primarily the high-end restaurants that participated. Hopefully the new program will work out better in the long run.

I certainly do not expect getting FF miles for dining at McDonald's... but I wouldn't be surprised if that will ever happen!