Campus: If you want to experience the historic core of campus, you'll want to enter through the main gates on Oxford St and go up the main road through the belly of the beast. All of the best architecture can be found on this walk.
Here's the main entry drive:

If you want high quality food you'll want to head to the gourmet ghetto in Downtown Berkeley right before the main campus. Very popular foodie neighborhood, if you don't mind spending a little more. Its cousin is College Ave, on the South East side of campus. Similar high end restaurants.
If you want traditional college eats and booze, then Telegraph Ave is where you'll want to go, immediately next to the aforementioned Sproul Plaza, site of every famous protest ever.
Bars you can find on and around Telegraph:
Raleigh's: great outdoor bar, it's a fan favorite
Henry's: Very old school bar, with massive beer garden area; long lines
Taphaus: German beer hall
Pappy's: Typical college bar, outdoor area
Kips: DIVE college bar, best for post game, dead pregame
Freehouse: Great large bar with large outdoor area, good mix of young fans and families, closest to stadium
All of these are within 3 blocks of each other.