In Becker's fridge is an orange to the left of the three beers. In the next shot, the orange is to the right of the three beers.
When Mrs. Recinos is asking Dr. Becker about clear liquids, she mentions coffee. Dr. Becker rhetorically asks, "Is coffee clear?" Black coffee is considered a clear liquid and is acceptable for a patient restricted to clear liquids. Dr. Becker should have known this.
When the people in the diner see the news story about Gil returning the money he found and being rewarded with thirty thousand dollars, the antenna on the television is not hooked up, which would make reception almost impossible.
The couple with the ring in the champagne leave the restaurant without drinking, so the ring would still be in the glass when Becker takes it.