I don't drink at all. Well unless I'm in Munich...who would miss a chance to have a proper beer in Munich?

Seriously though....I'd be under the table if I drank one rum & coke. I would probably be vomiting after 3. I wouldn't expect that the FA would know that about me though. And no offense, but the FA has no real idea as to what someone's upper limit is either just based on their guess as to your height/weight. So I think she handled quite well. She can't very well take the chance that she guesses the wrong way and you end up getting hammered and obnoxious. By that time, it is too late to get the alcohol out of your system and the flight has an issue since they are 35,000 feet.

Now had she flatly accused you or stated, "...you seem to be getting intoxicated" you surely would have been put off by that too. Right? So should they utilize breathalyzers on board just to be certain that some pacs get served right up to a certain threshold? Not saying you were or would end up being a rowdy drunk, but c'mon...other than tracking the number of servings per flight (or sitting at the Skyclub), I don't really know how they can be expected to handle this. As a non-drinking pac, I'd rather they not roll the dice and hope that they've guessed correctly and that the pacs wanting more and more booze don't end up being obnoxious, or worse, dangerous (e.g. beer muscles at 35,000 feet).