Occassionally / in moderation??
I know of a priest who drinks (takes whisky) to socialize and even plays mah-jong in his spare time (yes, shots of alchohol) who also happened to be a dear family friend..
Are priests forbidden to smoke and drink?
The following link should help answer your question about whether priests can smoke and drink. If you have any further questions, please contact Catholic Answers directly.
Are priests permitted to smoke?