The largest crowd I have been in was back on 6th March 1976 v Rangers in the Scottish Cup QF. I was with my Father in the Portland Road terracing and if I remember correctly I had been unwell and off school for a few days before the game and I was just glad that I got to go. Remember it being packed and noisy with a crowd of around 18700. Unfortunately Queens were well beat and went down 5-0.
I was also at the League Cup QF earlier in that same season (24th Sept 1975) on a pouring wet night. The crowd was around 7500 for that one. We had lost the first leg at Ibrox narrowly 1-0 and we led 2-1 after 90 minutes in this one only for Rangers to level and go through to the SF on a 3-2 aggregate score.