Thanks NDFan

I have subsequently changed my bookings around. Whereas I was previously flying: DXB-KRT (FlyDubai), KRT-AMM-IST (DONE4); I am now flying: DXB-AMM (FlyDubai), [1 Day Layover], AMM-KRT (RJ Award), KRT-AMM-IST (DONE4).

I emailed RJ in advance and received a reply from their KRT station manager advising that it would all be ok (as was your experience).

Ended up costing me a bit to change flights, etc. but has de-risked that part of the flight, and means I get to spend a day here: http://www.kempinski.com/en/dead-sea...shtar/welcome/