All of the dialog in the film is ADR ( automatic dialog replacement).
The night exteriors were lit with two 5k's and a 4 bank kino flo. The production was loaned a generator, but had no way to move it around. This led to them not being able to bring the lights close to the action, due to a lack of cable. Surprisingly, most of the footage was at least bright enough to use, though not nearly as pretty as hoped.