I've only done something like this once before. Waaaaay back when I was a kid (probably mid-80s) we went to Hong Kong on Singapore Air, and first we had a YYZ-YVR flight, then Hong Kong with a stop in Toyko. People were allowed to get off and stretch in Tokyo, but the majority stayed on board.
And there was another time when I went to Vancouver on Canadian, and I was one of maybe 5 people that actually got off. Everyone else was headed to HK. So sort of the opposite of the other scenario.