Tut, tut, LTNman. Think we might have to take your anorak off you.
The open days were in 1992 and 1993 across Sat/Sun. The C130 was at the first but it wasn't a RAF one but one of the usual commercial ones that was a regular visitor. Some group wanted to tow it manually along taxiway Delta. I think the crew kept the brakes on.
The Luton Paris service was funded by he airport so effectively London Luton Airport ran an airline.