Hospitality workers were willing to go on strike and take a cut in pay to win stronger job protection against inevitable advancements in technology. That includes technology already at play at some resorts: self check-in stations, automated valet ticket services and robot bartenders known as tipsy robots. The emergence of robotics in the hospitality and service industry has been on the union’s radar for years. The difference now, is the combination of artificial intelligence and robotics. Experts say that breakthrough in AI technology has forced labor unions to rethink how they negotiate with companies.