Z&Y Restaurant - Szechuan food . Usually have to show up and put your name down on a list, but it can move pretty fast. Right next to the China Banks.
El Metate - The pineapple salsa is what's up, sometimes it's other assortments of fruit in there.
Pancho Villa Taqueria - 16th and Mission. Cheap fast mexican food.
Mr. Banh Mi, Balboa Street - Cheap vietnamese sandwiches, super good. If you had a board you could bomb Balboa down to the beach afterwords.
Tu Lan - Vietnamese. Snack skateoards recently dropped a tribute board to this spot.
Yamo - Burmese
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I'm not much of a drinker, so I can't really help you on the bar tip. Skaters seem to flock towards Kilowatt in the mission. Surfers / skaters like The Riptide in the Outer Sunset.