Well I just had to post an update on this. Since my post last week, one of the people I was most worried about accepting me as a non drinker confided in me, totally unprompted, that she had been battling with alcohol herself and her fiance had been asking her to curb her drinking as it was getting out of control.
It really reminded me that you never know what other people are thinking!!!
She was really pleased I offered her some advice and suggested we go out for a meal, sans alcohol. Amazing! :-)