Audio problem: At the end of the happy birthday song to Norman, someone not in the room sings "and many more." It sounds like the mailman.
Factual error: When Henry Fonda and Katherine Hepburn are filling the boat up with fuel early in the movie, when the gas pump is shown, Henry Fonda is looking at the pump. $19.00 is the total sale but 29+ gallons purchased, at .67+ cents per gallon... The total sale should be over $19.43, probably closer to $20 but I can't read the fractions of gallons or cents. (00:14:10)