I'd second the car rental idea if there's no drop off fee. If you have a car there are plenty of places in Manhattan Beach you could eat at. MB is 10-15 from car rental agencies/LAX. If you wanted a view of planes landing, Proud Bird is an option near LAX. They have 'early bird' pricing that ends either at 6-6:30pm - ie, orders must be placed by then. Cheers.