Trivia: As Hal meets Meredith coming out of an elevator in the hotel, she is mumbling "Let's Get Together", which was a song from the original movie.
Trivia: In the scene when Hallie (playing as Annie) and Liz (the mom) are walking to the photo shoot, they're walking across the street. It goes into a freeze frame while playing 'Here Comes The Sun', that was a Beatles song and the Beatles took a picture in those exact poses.
Trivia: The actor who plays the boy accidentally placed at the all-girls camp is Lindsay Lohan's brother.
Trivia: Lindsay Lohan's Mum, two brothers and sister were seen in the airport when she was doing her hand shake with the butler.
Trivia: The actress who plays Meredith's mom is the same woman who played Vicky in the original film.
Trivia: The street Hallie and her mom are walking across is a remake of Abbey Road, recreating everything from the people to the cars, etc.
Suggested correction: I've looked at it closely. I can't see a hole anywhere.
You can also see that Annie's ear is already pierced during the lake scene.