1986 or 87, going on holiday to Malta with my girlfriend. Night flight to Luqa in a B720. Co-pilot was the son-in-law of our landlady at the time, and knew we were on the flight, so as we neared Malta we were invited up to the cockpit. Then, having left things a bit late, we were offered to strap into the jump seats for the landing. ATC were giving clarance to land, but the captain was not quite finished with his cigarette and asked the co-pilot to stall ATC until he was ready, Then, having stubbed out the butt, he said, "OK, time to go in". Amazing experience to begin a holiday! I don't know whether pilots can still smoke on the flight deck, but certain that passengers can no longer visit the cockpit nor strap in for landing.