<I also remember when kids were routinely let into the cockpit> I wasn't a kid, but I got to hang out in the cockpit for a good-half hour on a cross-province A

<I also remember when kids were routinely let into the cockpit> I wasn't a kid, but I got to hang out in the cockpit for a good-half hour on a cross-province Air Canada flight long after it was illegal in USA airspace (1990s). The amazing thing, apart from the scenery, was that you could see dozens of other jets in various headings and altitudes.