A couple of years ago, bmi called me to explain that some flights I had booked had been affected by schedule changes – one was by about an hour, the other by just 5 minutes!
But you’ll have a great flight with Etihad. I’ve not done the A330-200, but the 777-300ER operates the Abu Dhabi to Bangkok flight. Inflight entertainment is excellent (on-demand) and the service is pretty good, too.