Casinos don’t owe sales or use taxes on complimentary meals they give employees but must pay taxes on the comp meals given to customers for points earned in their player rewards club, Carson District Judge Todd Russell ruled Friday.There is about $18 million in taxes involved in the Harrah’s case — the lion’s share of that in the rewards club portion, Senior Deputy Attorney General Blake Doerr said.“Employee meals are not subject to the sales tax, in this court’s opinion,” Russell said in his ruling.He said they would be if they constituted a “retail sale,” but that in his opinion, …