Other mistake: In the beginning, the girls arrive at the airport in Chicago and you can see a billboard in the background. Then the credits roll and they land in the sunny Bahamas and as they are driving away in the limo, the same billboard can be seen in the background. Guess they were on a tight budget and had to computer generate the snow over a scene filmed in the Bahamas.
Stan: There's been a PI at the shark pool.
Stan: Puking incident. Some kid puked all over the shark pool. Anyway, I need you to clean it up for me right away. A.S.A.P.