See if your hotel concierge can get you in. If not, you’ll have to use your wiles. At pint-size hot spots such as Atera or Blanca, your chances are slim. But established favorites, such as Daniel or Maialino, have more tables—and more cancellations. Call at or after 3 p.m., when the hosts finish reconfirming the evening’s reservations. There just might be a spot. OpenTable is also a great resource. It may not get you in to your first choice, but it will show you nearby restaurants that do have availability. If all else fails, walk in. Casual arrivals may find seats at the bar—and if you dress the part, some maître d’s will reward a bold, spontaneous request with a table.