Congrats on 9 weeks! Great job on staying strong!
I can relate, as I'm coming up on 12 weeks of sobriety. One thing that I've noticed when dining out with friends recently, that two out of three of them were actually inspired when I declined a drink. One friend was also not drinking and appreciated having someone else in the same boat, and the other decided to cut it out for awhile too after she heard me explain that I quit alcohol for health benefits. They still have a hard time believing that I've cut it out for good, but that's their problem. I prefer my much healthier, happier, and now leaner self.
So my take away on that is there's quite often others who have quit as well (or wanting to quit but haven't admitted it yet) and are probably admiring that you're not drinking with the rest of the group.