I would say yes to both of those questions.
Lots of passengers were senior civil servants, diplomats etc. the dress codes were very formal men wore suits and ties the ladies dressed up pretty much.
On the other hand there were lots of ordinary folks from different parts of the world probably taking a trip of a lifetime. I remember taking lots and lots of 'ten pound Poms' on their way to a new life in Oz.
Passengers in First Class were very much upper crust. Lots of Lords, Lady's and Knights and American movie stars crossing the pond.
In those days the oil rich Arabs hadn't got around to buying their own aircraft and would often buy the whole First Class cabin for themselves and relatives and staff.
Many a BOAC crew member wore a gold Rolex watch with the Sheiks face on and many Stewardesses drove E types, one in shocking pink
