Danny, we truckies were always pleased to deliver our pax early if possible, but that could raise fresh problems as you describe.
There was a fatal accident at Great Yarmouth with a Wessex. As a result the Wessai were grounded and I, with my shiny new Sikorsky S76A was detached from Aberdeen to do the business. A large part of the workforce who looked after the gas rigs in the Southern North Sea were known as 'day trippers' inasmuch that they would fly out in the morning and return in the evening. Over the years with the Wessex this would break down to a reliable schedule.
The Wessex at full chat could just about make 100knots or so. The S76A was 145knots without thinking so over a shuttle trip it would pick up at leasts 30 minutes in a sector.
Sometimes somebody would get home to realise that they were not expected.