CitySleuth must confess that he has struggled to nail the location of this next scene, where Allan takes his new friend Julie out for a date at a tavern. Instead he presents educated guesses and looks to his readers to confirm or otherwise.
Then ... In the tavern two bikers spot them in a booth and head over. (Click or swipe the image for an enlarged view).
... and Now? Could this have been filmed in the Hidive bar at Pier 28 on the Embarcadero (map)? The angled front door with the window next to it on the right matches nicely. The tavern, for many decades known as the Boondocks, was remodeled in 2004, which might explain why the bar is now on the opposite side.
As the bikers mercilessly hit on Julie (Joy Bang), totally ignoring our hapless hero, the writing on the life ring buoy on the wall references Pier 28, the location of the Hidive. (A different shot showing all of the buoy revealed its full text as 'Maries Pier 28').
Then ... The big guys follow them outside. Allan's amusingly puny efforts to 'fight' them gets him nowhere fast but they leave him mostly unscathed after Julie makes a choice - them. To CitySleuth's eye this is a different building than that used for the interior scene.
and Now? ... Note the bar's name above - 'Pier Head'. The 1972 street directory lists a Pier Head tavern at 780 Embarcadero South opposite Piers 42 and 44. The tavern, indicated below in a vintage aerial photo, and the piers were demolished decades ago during major reconstruction of the Embarcadero. But was this scene filmed here? CitySleuth appeals to anyone who might know, or who might have a vintage photo of the long-gone building, to comment below or contact him at firstname.lastname@example.org.
Since then, these southern-most couple of blocks of the Embarcadero have been removed, making room for the Giants ballpark; as a result the spot where the Pier Head used to sit is now right next to the ballpark.