Over the summer, the family will be out of OOK. We want to take that opportunity to renew my wife's passport which has a bit over a year to run. Has anyone renewed their passport OOK and returned with both the new passport and the old passport carrying the multi-entry visa?
Same here - worked like a charm for us. One tip, though, have the old passport ready at Bahrain airport if coming in through there. The new passport confuses them and they will want to see the old one (I had to dig through our expansive hand luggage to find my wife's).
Saudi Passport Control on the causeway was a breeze - even faster at the booth than usual for some reason!