Christ on a bike, some people will never be pleased.
We wait years for a Beijing link, we finally get it and still people turn their nose up.
I've seen 'the schedule is poor', 'the plane isn't big enough' and more.
I'm sure Hainan have done their homework (Christ they have had long enough to check and double check), so I'm sure there will be people who will be happy with the service.
Let's give the route a chance shall we. You never know, a beloved afternoon/evening flight may materialise if the morning flight proves itself.