NTA at all. First of all, congratulations on accepting that you're an alcoholic. You were brave for even attending that wedding - weddings are hard even when you've been sober for a long time. I've been sober for 9 years and it's gotten easier to handle others offering drinks or insisting etc. Typically if someone has a problem with me not drinking it's an indication that they want me to drink for them to feel better about their own drinking - like "we're in this together!" (if that makes sense). Now I am able to let it go and let it just be their problem, but it took time. It's hard to do that when you're so early in your sobriety, and it's especially difficult with family that are being intrusive like that. I suggest getting into the recovery program you mentioned sooner rather than later so that you can have people to call who are also sober who will be supportive to get through life stuff exactly like this. You're not alone, you really did your best, and you are definitely NTA. Good luck with everything!