It's normally a dogs dinner if you take an international flight into an aerodrome that isn't used to it. Does Jetconnect have engineers and ground staff at those other ports? Is it their company SOP to carry those ports as alternates? I doubt it but I could be mistaken.
If the delays were unforecast and as bad as how they are being reported then ASA needs a rocket. How can a safety critical outfit operate so close to the bone?