Hi Flyn!
Oh you are going to have a great time! Last summer I had a big out of town family wedding over a 3 day stretch. I just took my time, enjoyed being in the moment and ended up having a fantastic sober time.
I took on an explorer mentality. Wherever the celebration went, I went and explored. And I had SR at my fingertips as well.. The wedding and reception was in a gorgeous location with great weather so I ended up hanging outside and conversing a lot. The only awkward moment was the first time I went to the bar for soda and lemon. Then poof! It was all about great conversation and exploration. Oh, and the desserts and coffee. Wow. They never tasted so good.
As far as me not drinking. No one in the extended family noticed or cared.
Cannot wait to hear how it goes for you!