Niall,
I noticed that too as was always just the Machrie and Machrihanish that Loganair offered in the past, not Mach Dunes. Although, given that the course can’t be much more than a 5 minute drive from the airport, I’d be surprised if they wouldn’t send someone along to collect arriving golfers, particularly as the hotel is back up and running. I don’t see any options for playing Machrihanish AND Mach Dunes (daylight permitting obviously) then flying back or an overnight stay alternative but I suppose that would require some sort of tie in with a local hotel.
I was thinking about how practical and feasible an (almost) ‘as the crow flies’ ferry trip comprising Ardrossan - Arran (Shiskine) - Campbeltown (Mach/Mach Dunes) - Islay (Machrie) trip would be. Mainly driven by wanting to see Shiskine and a ferry is required to get there! Any thoughts?