I am with you. I would suggest to go to Bar of the Oasis hotel just before Marriot. The place is not so crowded, there is enough space, entry per person is QR 25/- which includes a drink of your choice and singles are also welcome.
Regarding recognising lets make a dress code like a Red Tie for all men and or a red/black stole for women.

What ya say buddy?

rajeev