Hubby just mentioned this very same issue in his Monday Night Bible Study this week...
We have friends (other Pastors and their wives) who hold the "We Have Liberty in Jesus" view, and they drink wine and beer - In public and in front of their unsaved (grown) kids.
And while I agree that an occasional glass of wine (with dinner) will not send a "mature" Christian to hell, it's certainly not wise or prudent to promote it publicly, and especially around "Babes in Christ"