Trying to figure out the best thing to do! We'll be flying in after Christmas (as long as the rules don't change ...) and it looks much easier to get the test done there and then in the airport. But I'm not sure how much time we should leave between when the flight is due to land and when we book the test - it looks like you can't move the test. We don't want to spend all day hanging about in the airport - but obviously it would be very expensive and inconvenient to miss the test! We'll have checked luggage to collect and will be coming from the US (UK citizens).
Any advice from frequent flyers would be very helpful! Thanks