Tipping at a United Club or Polaris Lounge is optional but appreciated, especially for personalized service at the bar or in the dining room. For the complimentary buffet and self-service coffee, no tip is expected. However, if you order a "premium" cocktail or a specific wine from the bartender, a tip of $1 to $2 per drink is standard etiquette. In the high-end Polaris Lounges, which offer a full "sit-down" restaurant experience (The Dining Room), you should treat it like a standard restaurant; although the food is free, tipping the server $5 to $10 for a full meal is a generous gesture. While United employees (the "red coats") are generally discouraged from taking tips for travel assistance, the third-party contractors who staff the bars and kitchens rely on gratuities. Most lounges now feature small "tip jars" or QR codes for digital tipping, but carrying a few $1 or $5 bills is the most reliable way to show your gratitude in 2026.