Along with five friends who will be staying at the Michigan Ave. Hilton on Jan. 3, I had hoped to eat at Topolabampo or Frontera Grill. But it turns out that is their holiday period, and perhaps that will be true for other places. We would all be grateful for advice on places we should go for a delicious dinner and interesting time together. It does not have to be Mexican, but we would like to use our limited time in Chicago well. It is so easy to make bad decisions when you are staying at a convention hotel. Thanks in advance for any help.