World Cup fans frustrated by ‘confusing and expensive’ tipping culture in US BBCWorld Cup tourists have embraced burgers and BBQ. Tipping is another story. YahooWorld Cup tourists aren’t leaving tips — and NYC restaurants are fighting back New York PostKansas City restaurants drop automatic World Cup gratuity after international visitors fall short KCTVLet down by World Cup traffic, Crossroads businesses pivot on tipping, hours Kansas City Star