Food options in the terminal are pretty sparse. Eat before you get to the airport! Also while terminal 2 is under construction the security lines can get pretty long so get here early.
American airlines now let's you have a mobile boarding pass, no more printing paper, check in and use your iphone as your boarding pass!!! Genius! Why didn't they think of this sooner?
Gates 1 and 2 (and 1a?) are not near 3-10. So if you arrive at 3-10, you have to go through another security checkpoint when connecting. Even though you just got off a flight. -_- Worst. Setup. Ever.
Do not get coffee for anywhere but Starbucks. Not a Starbucks fan, but I ordered coffee from one of the "restaurants" took a sip, paid for it & left it on the table. It was undrinkable.
Friendly staff throughout, but extremely slow security lines. Not sure why, but SAN typically has the slowest security lines of any airport I frequent.