Other than the loose cinematography, clearly cut-in shots of people saying their lines outside the natural stream of the conversation, and two moments of why didn't they reshoot the scene, this is an interesting and funny rom-com that's a bit of a farcry from what I'm used to.
There were multiple moments in Keep the Change when the audience collectively laughed. There were a few moments when I felt the urge to cover my mouth and silently release my own laughter as to avoid drawing glares from the audience. Yep, it's got some dark jokes. Damn good ones at that.
I may have a problem with the cinematography, but the cameramen really focused on the right things at the right moment. It's the shots that really let me feel like the love interest had autism. Nevermind how she conversed. It was the way she touched. Y'all know what scene I'm talkin' about.
About the ending... it was a happy ending with such a degree of contextual sadness that I felt conflicted as the credits rolled.