When Andera first meets the guys in Stinky's bar she orders six shots of whiskey. She pours four of the six glasses and pauses to hand the fourth glass to Willie. It cuts back to three empty glasses. Two fill up and then it cuts away to her face as she pours the seventh shot but she keeps pouring, at least three shot glasses worth.
In the piano scene at Johnson Inn while flirting with Willie, Andera (trying to show her coolness and "guy knowledge") says "Pitchers and catchers report in two months, three weeks and six days." Since the movie takes place a few days after Christmas, this time frame would have Spring Training beginning around last week of March/beginning of April... when Pitchers and Catchers would really report around early February.
As Willie, Tommy, and Gina are exiting the drugstore (after her rant about guys unrealistic physical expectations of women) the signage of the store clearly reflects Valentine's Day season, while several times the movie shows it's Christmas season.
During the fight, Tommy is held against his truck by two of Steve's friends. The friend on Tommy's left in the rear shots is holding his head. In the alternating frontal shots the hand disappears. In the final frontal scene Steve's friend on the right is holding Tommy's head.