Set one clear, written “World Cup” approach in advance: how to request time off, whether shift swaps/flex starts are allowed, and what happens with unauthorised absence. Remind employees of alcohol rules and expected conduct at work, and set simple ground rules for any viewing at the workplace (only during breaks, volume, customer-facing areas). Reconfirm IT rules (no streaming/gambling on company systems, security/compliance escalation for illegal activity). Finally, apply the same rules consistently to avoid grievances and equal-treatment issues.