We recently arrived at Jetstar check in counter at Sydney domestic airport very early ( four hours before our flight). The check in counters were open , so I thought we would be able to check our luggage in and then go through to the food court area. ( Was hoping for the Qantas lounge as we have access , but that was in a totally different part of the airport). We were not allowed to check in our two cases for the flight, and had to sit at a small kiosk area for two hours, before they would let us check in. Can anyone explain what the reason for this is please ? Just so we know for the future ( not that I think we will ever fly Jetstar again).