The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Rocky Mountaineer's[3] own 30th-anniversary blog post states the first scheduled journey departed Vancouver on 27 May 1990 with 200 guests.
Independent corroboration of the operator's own account: the article's infobox dates the service from 27 May 1990 and its history section says “The inaugural train journey took place on May 27, 1990”, citing the Via National Timetable of that date.[1]
The company's own anniversary post states the first journey date.[1]
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