I haven't been to the Island for five years so am a bit behind with the trams; has Ramsey station been reduced still further? There were horrible plans to 'modernise' it a few years back, and the large corrugated iron tram shed has off course gone. The goods shed became a yoof club (along with down wiv da kidz 'graffiti' to make it look cool and New York-ish...
There was usually an MER van by the bufferstops at Ramsey and yes, the trams were used for deliveries (including mail); I remember having car parts 'put on the tram' in Douglas in the early '80's.
An interesting quirk of Ramsey Plaza station (to give it its full name) in the 1970's was the Milk Marketing Board vending machine in the front garden, bordering Waterloo Road; presumably it was refrigerated -it sold cartons of milk- but even in the days of corner shops rather than 7-11 convenience stores it seemed an oddity. Long gone now, of course.