Much a Dew about nothing?

Today the New York City Health Department voted 8-0 with one abstention to pass the mayor's ban on portions of sugar sweetened beverages larger than 16 oz.  Economists typically prefer taxes to outright bans on unhealthy behavior for a variety of reasons.  Will we see bootlegged 32 oz. containers at Citi Field or Yankee Stadium?  Or just more lines at 7-Elevens, which are apparently exempt from this new regulation!