Prohibits a public facilities district, created by a city or town bordered by both the Columbia and Snake rivers, from making a facility, constructed after the effective date of this act, available to a prospective user for an event that is not open to the public if reasonably comparable private facilities are available within the boundaries of the public facilities district.

Allows a facility to include only equipment, amenities, and operations directly related to the primary function of the facility.

Includes aquatics facilities in the definition of "regional center," for purposes of chapter 35.57 RCW (public facilities districts).