Just to give some words of encouragement to those not expecting their high preferences and hoping for waiting list movements:
Our situation last year was got offered 6th choice on 2nd March (our closest OK ish comp) . That was an admin error though as dd1 had passed an aptitude test for our 5th choice out of borough school. So that got sorted straight away thankfully! So we were expecting her to go to the 5th choice school.
In April we got offered our 3rd choice grammar school which was OOC. We had to decline as had planned to move house to reduce the 1.5 hour commute but due to covid we're unable to!
So we had been offered school 6, 5 and 3 by the end of Apirl.
In July we were all set to buy the new uniform for school 5, when lo and behold we got an offer for school 4 which was our 2nd closest school and my favourite!
So that's where dd1 has been since September. Schools 2 and 1 we never really had a good chance of her getting into due to popularity and distance (1) and score (2).
We are all very happy with how things worked out, although it was very stressful at the time going through all the waiting and uncertainty.
The thing I learnt is however much I tried to second guess things, you never really know what will happen 😉