You simply cannot say that based on just a couple of incidents spread over a couple of years. If there regularly came out pictures like that, it would be a matter to be concerned about, but there don't. Saying that he's an alcoholic is a fairly harsh judgement if you don't know the man in real life and don't know his daily actions, he's on vacation for christ's sake, let him have his fun (maybe he just wanna check if there's someone with a camera next time).
I really think it's absolutely hysterical how big a deal people are making out of this.
I completely agree. Like a great many people, I'm sure Harry enjoys a drink, but these pictures were taken on vacation in Las Vegas - what happens shouldn't there be taken as an indication of how one spends the rest of his time!