When Tony arrives at the cabin in the Adirondacks during a wild rainstorm, he walks in saying "Ain't a fit night out for man or beast." This is a line popularized the year before by W.C. Fields in The Fatal Glass of Beer (1933).
At 6'2", Joel McCrea was a foot taller than Miriam Hopkins at 5'2".
After Tony and Dorothy return from the lake, they drink liquor by the fireplace. Prohibition had been repealed only 7 months when filming began in July 1934.