INTOXICATING LIQUOR ‑- MINORS ‑- ADMISSION OF PERSONS BETWEEN AGES OF EIGHTEEN AND TWENTY-ONE TO TAVERNS Notwithstanding the enactment of chapter 292, Laws of 1971, 1st Ex. Sess., persons between the ages of 18 and 21 years are still prohibited from entering an establishment which is classified as a "tavern" by the state liquor control board except where they enter as professional entertainers under RCW 66.44.315.