The first half certainly makes sense and seems perfectly reasonalble in regards to you not wanting to meet anyplace alcohol is served.
Regarding the second half, you know firsthand that only the drinker can make the decision to quit. And the alcoholic mind doesn't think rationally when it comes to drinking. So while what you wrote seems reasonable and caring, don't be surprised at all if your friend doesn't take the advice. Also don't be surprised if he/she views it negatively and responds accordingly.