Agree with the above, in the past we have booked in July for Feb, but this time it was earlier as the price was lower than for several years plus it was allowing us to put miles towards it which was a first. If you want bubble seats you will need to pay to book those as soon as you book the flight as they go quite quickly. I haven't checked prices since I booked, but I have looked at the seats and the bubble has been booked for some time.