Sat here last June for a Houston Astros game. Figured I would check them out one last time before they moved to the American League. Oh well. Had fun at the game. My seats were in row 22 which feels much closer to the field than what I had anticipated. I don't think many fans will feel that seats behind the Giants dugout could be bad. I could tell walking down from the concourse that every seat here is a great seat.

The Giants bullpen area was a little further down to our left. All of the relievers sit in the bullpen until they're told to warm up unlike Wrigley Field where pitchers all sit on benches down the base lines.
The easiest access points for these seats would be to just enter thru the main gate in Willie Mays Plaza. You will see his statue outside of that entrance; make sure you have your picture taken with it. 'Doggie Diner' is the main concession outside of section 123 and it has an excellent Polish sausage and aside from that, it just has the basic stadium fare and refreshments.