It depends on what alcohol I have been drinking. If I drink vodka which I am strictly forbidden to do I can be nasty and cause an argument over anything. If I have been drinking alcopops or even wine I can be a happy drunk.
I'm slightly less anxious/uncomfortable/awkward than normally. 3-4 times in my life I've been so drunk that I actually became talkative.
I have not many but generally positive experiences of drinking. Well, drinking myself, other people...
When I get drunk I get touchy/feely and really cuddly. I'm a very affectionate person, to begin with (I love giving people hugs) so when I get drunk I get huggy and I tend to compliment people a lot which can backfire because people have misunderstood it as flirting before and things got really awkward lol.