"We’re sold out for the 26^th year in a row," says Hubbard. "The current streak of sellouts actually began here at the Olympic Club in 1987. We’re extremely happy that the Bay Area is such a hotbed of golf and such a supporter of golf championships."

Hubbard says that so far transportation to and from the Olympic Club is going smoothly. There's no parking on-site; spectators should take BART to the Colma station or park at Candlestick, and pick up a free shuttle at either location.

The USGA Spectator Guide lists some other stuff besides cell phones you shouldn’t try to bring along, like food, drinks, cameras, signs, banners, dogs, cats, lawn chairs, stepladders, weapons, or portable TVs and radios. It also warns spectators to wear comfy shoes - and no spikes, of course. Those who aren't familiar with the microclimate at the San Francisco-Daly City border should remember to prepare for foggy and/or breezy conditions.

Olympic ClubOlympic Club

U.S. Open: A Phone-Free Zone