Do You Have Any Questions?
Single Entry Emirates Visa is entitled to be used for 1 entry and 1 exit.
Please be clear, that not a single government of any country in the world makes a refund to the rejected visa applications be it for any reason.
Ideally, you need to apply 30 to 40 days before your intended travel date.
Yes, you will need a Emirates Visa if you will be going out of the airport.