Hows about the Palace away game a few years back, last of the season when we took something like 8k in that stand down the side.
My group, and many more blades, were in the Holmesdale end, behind the goal with the home fans so certainly more blades in attendance than the publicised number. The home fans were very welcoming, not at all unhappy to have their end half taken by blades, although the sheer number of Sheffield accents may have put them off saying anything!
MK Dons away this year could be a record breaker - I seem to remember them giving someone as many tickets as they wanted, didn't Coventry or some other club take nearly 10k this or (end of) last year? Considering MK Dons is our last away game, promotion will hopefully either be in the bag or almost in the bag by then so it could be a party