Yes, as long as the lounge is open overnight and you've made a reservation, you should be able to stay overnight inside the lounge. Please refer to the lounge page to check the lounge’s hours of operation. For certain lounges, your reservation may contain a time limit. If this is the case, you can usually extend your visit by making multiple reservations to cover the time that you need in the lounge. Any extension will need to be booked directly with the lounge.