Every college will have bars and canteens, same for schools, hospitals, factories and other workplaces. Personally, I don't think they should be mapped. They are internal parts to the broader element which is already mapped, and they have no public use. I think it adds confusion for map users, more than clarity. Not everything with FHRS needs to be represented on OSM.

I think they should be tagged as removed:* and disused:*.
Bus stops are quite prominent in the rendered map, so keeping them as normal seems a bit misleading, if they are gone.

I have always seen it referred to with the article.

As for capitalisation, I capitalised the first word taking the two as a unit "The airline", but now I also see that sometimes they write "The Airline" on some of their pages and social media, so I'd be fine with that.

Certainly, thank you. I have opened this note osm.org/note/4839913 to list a few others that I saw that need updating.

Yes, please do add everything else you feel is needed. I am not entirely familiar with all bus route tags. Thanks.

The two have completely different meanings (as the wiki page shows). Here, a permit is required at those times (which means that access is *not* permissive).