Tony, Here's a question that popped in my head while reading your question about alcoholic beverages. Are you taking any pain medication at all? Mixing drugs and alcohol isn't a good idea. But if you were a beer or wine drinker pre cancer [and not an abuser] then I would guess you could tolerate a couple a day--BUT-- if your throat already hurts, the alcohol is going to exaserbate that.
As to non prescription pain relief for your throat, you might give strong tea a try. Use it warm or cold-your preference, swish around your mouth, gargle and swallow or spit it out. Another product found over the counter is Rincinol P.R.N., It is to be "swished" and spit.
Keep trucking, Tony. Amy