2. You can get unlimited drinks for $40
Though they won't advertise the fact, several of the airline lounges at SFO offer one-day passes for $50, even if you're just a curious lowly main cabin flyer looking for a pre-flight swig of Chardonnay. This includes the Delta Sky Club (Terminal 1, pre-security), American Airlines Admirals Club (Terminal 2, post-security), and United Airlines United Club (Terminal 3 & International, post-security). Only one borders on being worth the cost of entry: if you're flying Virgin America, sign up for the Elevate frequent flyer club (free), and you can purchase a $40 day pass at SFO's snazziest lounge, the Virgin Atlantic Clubhouse in the International Terminal, where you can get unlimited free drinks and snacks. Again, for $40.
3. Work remotely in a legit office
SFO has this new thing called the #Converge@flySFO Lounge in the International Terminal. No average business lounge, this space is set aside for "sharing ideas about technology" by giving you free Wi-Fi, tables, chairs, power outlets, a white board, and a magnetic chalk board -- just as you'd expect any room with a name that’s a hashtag with an "@" symbol and strange capitalization might.
4. You can get free Wi-Fi if you know which network to join
Best bet? Uh... "SFO FREE WIFI".