Wash. Rev. Code § 66.24.481
No public place or club, or agent, servant or employee thereof, shall keep or allow to be kept, either by itself, its agent, servant or employee, or any other person, any liquor in any place maintained or conducted by such public place or club, nor shall it permit the drinking of any liquor in any such place, unless the sale of liquor in said place is authorized by virtue of a valid and subsisting license issued by the Washington *state liquor control board, or the consumption of liquor in said place is authorized by a special banquet permit issued by said board. Every person who violates any provision of this section shall be guilty of a gross misdemeanor.
"Public place," for purposes of this section only, shall mean in addition to the definition set forth in RCW 66.04.010, any place to which admission is charged or in which any pecuniary gain is realized by the owner or operator of such place in selling or vending food or soft drinks.
RCW 66.24.481
*Reviser's note: The "state liquor control board" was renamed the "state liquor and cannabis board" by 2015 c 70 s 3.