My actual wedding is September 21st (eep!), but we're doing a reception on October 8th.
I'm pretty happy with the progress I've made over the last year, but it stopped just being about the wedding pretty quickly into the process. I think that helped - it was less about fitting into a nice dress for one day, and more about establishing healthy habits to take into married life. Healthy eating is normal now for me and the soon-to-be-hubby, and fitness is just a part of life.
I hit my clothing size goal a few months ago, but I'm happier about the behavioral changes I've made. Healthy eating and exercise are fully established habits now. I'm actually doing a 10k run at 7am the morning after my reception. How crazy is that?