When a layover exceeds 8 hours, your experience depends on your airline, your transit visa, and the airport's location. For long-haul carriers like Qatar Airways, Emirates, or Turkish Airlines, a layover of this length often qualifies you for a "STPC" (Stopover for the Purpose of Connection) service, which frequently includes a free hotel room and meal vouchers, provided there wasn't a shorter connection available. If the airline doesn't provide this, you have the option to clear immigration and leave the airport to explore the local city, provided you have the necessary visa or a transit-free permit. However, you must factor in the time needed for customs and security on your return. If you stay in the terminal, an 8-hour gap is usually the point where paying for lounge access or a "nap pod" like YOTEL becomes a worthwhile investment. Some airports, like Singapore Changi or Seoul Incheon, even offer free city tours for passengers with layovers of 5.5 hours or more, helping to pass the time while encouraging future tourism to the region.