When Francis and Renee are first in the bedroom, Francis' leg is alternately raised/lowered between shots while he is reading.
The level of the beer in mickey's glass changes in the final bar scene.
When Mickey and Hope come over to tell Francis and Renee about their spontaneous marriage, Renee's cigarette is obviously not lit, although it has been burned to create the illusion.
When Mick hits Fran in the fight, the sound effect is of a bare-knuckled hit to the face although both characters are wearing padded boxing gloves.