I would definitely give some thought to an escape plan, either permanent or temporary. I was in a wedding at 11 months sober and it was very difficult. I tried to beg out of it, but it was my sister's wedding. Everyone who was close to me knew that I wasn't drinking but there were a lot of old friends there who didn't know. I told them outright.
If you're struggling, just excuse yourself instead of drinking. In the end, nobody will really notice.