I saw first hand what happens to some people when they take Ambien after drinking. It's not pretty, and may or may not lead to one or more of the following: mistaking an office cubical for a urinal; puking your guts out in an airplane terminal, on the bus taking you from the terminal to the plane, and on the plane; wanting to fight the most inoffensive captain in the whole unit; and setting fire to Euros on the plane, while it is in flight.
Not making light of it, but that sounds like me on gin. Yonks ago, mind...