This is not a positioning leg. The flight operates 2 x per week Monday and Firday. This allows for weekend brakes and flights are being sold in conjuction with a local tour operator who will make weekend break packages.
The answer for 1 month only is quite simple, it is peak summer season and as the route has never been tried before is untested.
Manx2 has the aircraft to do for Wales what they are doing on the Isle of Man. I hope there is more good news to follow.