We did exactly the same thing except we drove up and kipped in the car at South Mimms services! I think the Arsenal game was the FA Cup 4th or 5th round though - Forest won 2-0 with Paul Wilkinson getting both IIRC.
Just how I remember it, a double fence separating the home and away fans in the Park End. I only went in there a few times - one I recall was the night we relegated Spurs which turned out to be not such a good idea in hindsight!
I know. Back then there were questions asked in the House if something like this happened but now it seems like there`s one every day and it barely gets reported outside of the local area.
A sad world we live in.