Hello again 'Ron'.
When I decided to give up alcohol it was because of something that changed my life. I was a "functional alcoholic" too. I was sent to rehab, orders from work. I had an opportunity to review my life. Holy cow! I knew I needed to quit but when I looked at my history and drinking habits it was amazing. How I made it as far as I did is amazing.
Here's the thing. A lot of people had no idea. Many were in denial for me telling me I was not an alcoholic etc. I had people trying to convince me I wasn't alcoholic.
The important thing is that I knew. I didn't need anymore convincing.
Don't be influenced by others who don't know what you already know.
And you don't have to convince them or prove it to them. It's nobody's business but yours (and your family if you wish). You don't need to explain yourself to anyone. And in time you'll realize that just telling folks you don't drink is good enough. "No thank you, I don't drink" - SAY IT! Think Sam Kinison in 'Back To School'.