Pacific Science Center Seattle Where To Park Seattle Tourist Help?

Seattle Tourist Help? - pacific science center seattle where to park

Does anyone know where I can get cheaper tickets for both the Pacific Science Center in Seattle, or the Children's Museum of Seattle? I know they arent too expensive, but we have a family of 8 or 9 and during the door-ups. The Children's Museum does not have discounts, but only for families of 10 or more. Even a cheaper ticket for the Space Needle would be great. I wonder where I can find it?