Yep, booze and prescription drugs are the accepted drugs of choice in JW land...I grew up in an alcoholic JW family myself, and definitely drank too much myself alongside many JW friends that did the same. I attribute the AD use mostly to the depressing lifestyle that ones leads as a JW. I was there, and quit those cold turkey when I left 10 years ago.
Of course not all JW were like this, but there seemed to be two extremes, those that drank heavily, and the teetotalers. Living and growing up on the east coast, I saw more of the former. I also lived in the Midwest during college, and much more of the latter was what was seen in public, (even weddings had no booze). I was a bit surprised at that, but the conservative culture there permeated everything, not only attitudes about drinking, but many other things we considered normal on the east coast as well. However, there were always smaller "private" groups that did whatever they wanted. You just had to be in the know.
These days a glass of wine or two or a hit of the MJ are enough to assuage any need to relax. Far more moderate and healthier since leaving JW.
d4g