Hi, I'm hoping someone can help me with what is the car seat law in California. We are hoping to do some touring after Disneyland and a Wonder cruise, so we will need carseats for our two nearly five year old kids. Does anyone know what specific carseat is required for this age group? I'm considering taking our ones from NZ as our carrier takes them for free but I want to make sure they are up to California safety requirements. Thanks everyone.