Without a lady with you, you will have to buy a bottle to enter.
Regis Abu Dhabi, Nation Riviera Beach Club is easily accessible from the hotel main building via an air-conditioned private tunnel underneath the Corniche.
There are also quite many flight attendants, in particular from Etihad Airways Tinder, Bumble, Happn.
Update 2019: A new bar called has opened its doors in the hotel in Le Méridien has two bars which are somewhat similar.