My fiancé and I sent our Save the Dates out a few months ago. There are about 6-8 new people we would like to include on our invite list, who weren't on our original list. They are co-workers and friends from church who are so over the moon excited for us that at this point we feel we should invite them (and want to!). The problem is I ran out of STD's, and so I was wondering if it's proper to just let them know the wedding date and ask them for their address closer to the time of sending invites out 8 weeks prior to our date? I know STD's aren't mandatory but I do feel in today's wedding world they are also sort of expected? Thoughts on best way to handle this?