Hi Eileen
I think it's very unlikely you would miss your flight but if you did, you would also be able to claim a hotel stay on your insurance. So the worst that could happen is you get to spend an extra night in a nice hotel, where you can rest after your long flight from China.
As I mentioned before, you would be welcome to call our 24 hour hotline number if you needed any help or advice on the day. We would do everything we could to help you find somewhere to stay or get on to another flight.
But all of this is very unlikely - I hope it won't stop you looking forward to a wonderful holiday!
Kind regards,
Olly, your editor