Captains and deck officers became aware of the culinary union’s activism, which the casino tried to conceal.

The casino has been the site of recent demonstrations and picketing by Culinary Workers Union Local 226.

Klaus Luhta, chief of Staff of the International Organization of Masters, Mates & Pilots, said: “When we learned of Culinary’s dispute with Station Casinos, the owner of Red Rocks, we wanted to move the conference.

“We