The taxi that Meg (Mira Sorvino) gets into has a registration number of "2T98" on the door, license plate and roof sign. The taxi she gets out of at her destination has "2T98" on the roof sign but the door and license plate reads "2P04".
Durning the birthday scene, two of the sparklers go out on the cake while they are toasting, but then when they finish they each grab one of the sparklers which are all lit.