Thanks for the replies. We will queue together, the worst they can do is turn me away and tell me to go to the other line. Just want to do all that I can to get out the airport as quickly and smoothly as possible. I think the last thing you want after 2 long flights when you are both feeling tired is to be delayed further while you have to wait for a medical officer or wait for an immigration officer to grill you about your plans and why you are entering the country.