The tour I want commences 30 minutes after arrival so it is not available for me, but I see the flight arrives up to 60 minutes early some days. I booked the evening tour so the plan is to go to the lounge until tour time.

If my flight is early that day is there any option to show up early and see if I can jump on the daytime tour or will that be a waste of time? And, if they cannot accommodate will I be able to re-enter the terminal for a 2 am departure the following date? Of, is there a way to find out if they can accommodate before entering the country?

Thanks for any input