PDFWAC 314-02-055
Can a beer and/or wine restaurant exclude minors from the dining area?
(1) To exclude minors from the dining area during a portion of the day or week or on a one-time-only basis, the applicant or licensee must request permission from the board (see WAC 314-02-130(1)).
(2) See WAC 314-11-060(1) regarding requirements for "minors prohibited" signage.