My wife and I will be in San Antonio for 3 nights at the end of Feb. We will be staying somewhere on or near the Riverwalk and are not renting a car. Can any give some really good recommendations for lunch & dinner; no steakhouse, preferable Mexican, Tex-Mex, and American. Price is really of no concern, so high dining, low dining, and in-between, just extremely tasty food. If you're a local, what are "San Antonio's must dine" spots? Any help is greatly appreciated, thanks!