Couldn't get one. Queued up twice and twice they'd run out (by 7.05pm I might add). On an 8,000 crowd thats poor in my book...
It's not that they run out (as I and a few others got one later on), it's just they have to wait for the others to be cooked, which makes it rather pot luck as to whether or not you get one. They said they had bigger ovens to use this year to ease the problem so we'll have to wait and see if it improves