I don't really drink - girl wants to meet for "drinks" what to do? NEED ADVICE!!!!

I have a weekly meeting and there is couple I normally go out with afterwards. My wife meets us for drinks because she isn't in to our organization. The couple we go out with and my wife order beer and mixed drinks but I don't ever drink so I order my Dr. Pepper. Sometimes there will be 8 or 10 of us go out and there will be about 50% that drink and 50% that don't. I have never been in a place that I have been treated differently because I don't drink. Don't sweat the small stuff and be yourself.