Postponed Reception Details, Help!

Hi brides to be! My fiancé and I are in the same boat as many of you all are. Our wedding is scheduled to take place on May 28, however we have now secured an alternate date in August and will be making the decision to most likely postpone within the next couple of weeks. Like many of you we have been engaged for two years and dating for nine. We are still planning to get married on the 28th, just us and our officiant, but then move the reception to a later date. What are you all doing about your wedding dress, are you wearing it to both? And what is your pospones date looking like? Are you redoing the ceremony version for everyone, having a vow renewal, or just the reception? Help!