Did we get an answer on your 5 months and... thread about whether you meant you had a relapse? For me, the definition of relapse is anything to drink, period. I don't believe in "slips" or "bumps" or ...
As far as what to say, "No thanks. I'd love water or a diet coke if you have one!"
And, quite simply, I don't have anyone in my life who doesn't support my recovery, and likely I don't have anyone who doesn't know that I am a proud recovering alcoholic.