Continuity mistake: When Jonathan and Sara are having drinks at the coffee shop Serendipity, the multiple straws in their drinks keep changing position. (00:04:35)
Continuity mistake: When Eve and Sara are at the café, the waiter brings her cake for her birthday and leaves with the cash tray. When they're ready to leave, the cash tray is back on the table, where Eve picks up the $5 bill.
Answer: It is not a movie mistake. The scenes were filmed at the Trump Skating Rink (formerly called the Wollman Rink) in New York City's Central Park. The arena has traditionally been used for multiple venues throughout the year including ice skating, roller skating, concerts, carnivals, etc.
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