During Joe's hospitalization he is visited by Jim (Jack Klugman) a representative from Alcoholics Anonymous. Jim takes him under his wing, persuading him to attend an A.A. meeting to face the group and admit his addiction, the essential first step to recovery.
They cross the road on their way to the meeting. This looks like a back lot location to CitySleuth, most likely filmed at the Warner Bros. Studios in Burbank.
Joe's efforts to talk Kirsten into joining him in the A.A. program fall on deaf ears. She is in total denial ... "I am not an alcoholic and I refuse to say I am ... I will just use my willpower and not drink and that's the end of it". Instead she disappears until Joe tracks her down at a motel two days later. He joins her, bringing bottles of booze.
The next scene, as recalled by director Blake Edwards on his DVD commentary, was filmed on a back lot, presumably at Warner Bros. Studios in Burbank. Outside the motel cabin there's a small lake with a liquor store alongside ... Joe makes an unsteady beeline for it after downing what he'd brought.
But the store is closed. Desperate, he breaks in and snatches a bottle only to be caught by the owner who cruelly demeans the helpless drunk sprawled before him by upending the bottle over his face. It can't get much worse than this ...
Actually, it can. For the second time he ends up in restraints in a detox cell.