First time I have used this service. I wasn't too sure how to input timings - but all great.
We had booked for 4 adults - car wasn't really big enough for 4 adults plus 4 lots of luggage - but all sorted - driver very helpful.
I had booked the wrong time for pick up (too early). I changed the day before - and it was accepted and all good.
Because of the baby we also had a pushchair and a travel cot - driver fitted it all in willingly - all good.