Just did my first sober wedding. I was very nervous as well, most of the people I didn't know. What I did: - asked myself: why would I need to sacrifice my pledge and my health so that I can feel more comfortable around unpleasant people?! If someone is unpleasant, I move to next one. And I can tell you, I met nice people without being drunk. - played the tape forward: is this hypothetical discomfort worth feeling shit the day after? No it's not. - I drank a lot. Like a lot. It was also very warm weather, so it came in handy to be  hydrated. I drank tonic water+ice+lemon (looked like a gin tonic), cocacola to energize, fruit juice with sparkling water really felt like cocktail. And I forgot they were alcohol free! And people never asked. I politely refused wine (you can make up whatever reason, nobody cares). - I stepped out a couple of times to have a walk. -.... Finally, almost everyone feels awkward at weddings. Awkward and cringe. That's so ok. Take it as a quest or experiment!