I had a FA from ATL-CZM ask me if I was driving when I ordered my 4th drink. I laughed and told her I'd be taking a cab with all of my buddy's back in Y who weren't drinking but that they would be shortly after we got to our resort.
I've had at least a half dozen drinks ATL-MSP on a flight back in January. I gave the FA a Job Well Done cert. I was getting picked up at the airport when I got home so I had no qualms about how many drinks I had. Besides, I weigh 220...or at least that's the weight I compete at...I'm normally a few pounds heavier.