Days of Wine and Roses - A Rocky Start
Joe Clay (Jack Lemmon) works at a public relations agency. One of his unofficial duties is to provide escorts for his clients. The movie begins with Joe working the phone, rounding up girls for a party being held on a yacht on the bay.
Then ... A cab pulls up alongside the bay and a young woman gets out.
... and Now, this is the St Francis Yacht Club car park at the West Harbor in the Marina district (map). The bridge needs no introduction.
Then ... She makes her way towards a small boat berthed at the yacht club - in the background is a domed structure very familiar to San Franciscans.
Then ... Joe and the girls are waiting for her in the boat - she climbs aboard to a sharp dressing-down from Joe for not dressing up ...
"You're dressed wrong, it's supposed to be a cocktail dress ... something peek-a-boo!"
... and Now, as they head out Fort Mason is straight ahead with Marina Boulevard alongside the harbor off to the right.
Then ... Their tender pulls alongside the party yacht.
... and Now, Citysleuth has heard that the yacht shoot was moved to Southern California because of poor weather in San Francisco but If was filmed in the Bay Area then below would be his best guess - looking towards Sausalito's Kappas Marina from close to where the 101 causeway crosses over Richardson Bay (the arrow on this map would have been the likely camera location). On a misty day the distant hills would be obscured.
On the yacht Joe realizes that the underdressed woman isn't one of the escorts after all, she's Kirsten Arnesen (Lee Remick), the secretary of the client hosting the party. He tries to make amends but she plays it cool. They couldn't have gotten off to a rockier start.