When Beth is talking to her roommate, the roommate says Beth would be back in NYC in 4 days. In the next scene she is with her mother and her mother says there are 5 days til Christmas. But she's actually staying in town until Jan 1st.
When Beth first meets the children she will be directing in the festival's play, she, sitting at the piano, says that they will start with scales. She does not play scales, but arpeggios.