We ended up with an allocation just shy of 40,000 for the Burnley match after selling out before Burnley and being allocated an extra 1,500 tickets . If memory serves me right we took 27,000 to the old Wembley for the Palace game .Correct. Most we've ever taken (at least in my time) was about 37k to Burnley on our first trip to the new stadium in 09. Then about 28k to Huddersfield, about 33k to Hull, 32k to City.
We'll not get a practical sell out like Burnley again as it was a novelty at the time and ticket restrictions were less stringent from what I remember.