I guess it depends on when you are going.
We are going in Sept, so I will pack the bathing suits early, because we won't need them here, about a week before we leave. I will pack, toothpaste, tooth brushes, suntan lotion early. Just so I won't forget them the morning we are leaving. We leave at 7 a.m., so need to be up at 4:30 a.m. to leave for airport. All of our bags will be in the car, including carry on bags the night before. We have 3 kids, so we need to be organized.