Wash. Rev. Code § 66.20.410
(1) The holder of a license to operate a distillery or craft distillery issued under RCW 66.24.140 or 66.24.145 may accept orders for spirits from, and deliver spirits to, customers if all of the following conditions are met for each sale:
(7) Under chapter 66.44 RCW, any person under twenty-one years of age is prohibited from purchasing, delivering, or accepting delivery of liquor.
(9)
(b) The outermost surface of a liquor package, delivered by a third party, must have language stating that:
(10)
(a) Records and files must be retained at the licensed premises. Each delivery sales record must include the following:
[ 2015 c 194 s 4.]