If you’re trying to do the four segments to maintain gold along with the miles requirement, island hopping will work. Some islands are easy but you will have to go back through security on each island. That is simple in many cases But at the larger airports you may have to run fast.

However avoid Naxos. The people who meet the flight on that island have finished checking people in and they only take paper passes. So they will not check you after the plane has landed which defeats the purpose of a mileage run in and out back to back. You will have to wait for at least one extra flight to return.