I haven't experienced drinkers feeling uncomfortable around a non drinker. Mostly they are too busy getting on with their own drinking. The only ones who ever even noticed I wasn't drinking were those who drank far too much themselves. Even then their interest only lasted until their next drink.
Social drinkers don't seem to care what you drink, it's no big deal to them. They don't worry about willpower because they don't need willpower to stop drinking, alcohol, whatever the strength is not an obsession with them.
When I was drinking I used to seek out people who drank the way I did. That way I could kid myself that I was a 'normal' drinker.
I never drank for the taste, I drank for the affect so I didn't bother with low alcohol drinks.