Priests are normal human beings who possess human qualities and instincts like all other people. They are also members of the public; they are opinion leaders and moral authorities not only for Catholic Christians but for non-Catholics and have to interact with people in the society wherever they find them. They could visit public drinking places and drink with the lay faithful not just for the sake of drinking but to be eye witnesses of the type of life that is lived by their flock and other members of the public.
In this way they stand a better chance to correct immoral behaviour from the pulpit. In bars, they are in the society but not of the society. They could visit public places to get public opinion on certain vital issues concerning the Church, the State and the family. This will permit them to give their viewpoints on issues when their opinion is sought.
The special aspect about priests is that their priestly vocation is a calling which is more spiritual than physical. As such, they are expected to be spiritual guardians to the rest of society. Their presence at public drinking places would naturally deter people from certain behaviour. As the barometer of the society, they have the duty to teach, refute error in season and out of season and at all times and in all circumstances.
What the members of the public should expect from them is that they should assume this office boldly and sincerely. Therefore, while in these places they should, moderate their rate of drinking and watch their choice of drink. Watch the time and type of places to visit, mind the type of conversation they indulge in and in what company they keep. Not make this a habit.
To conclude, it is advisable that they forever remain leaders, role models and be masters of themselves always.