I just sent out my STDs this past weekend for my wedding cruise scheduled for April 2010. I included a save-the-date magnet, preliminary RSVP postcard, and information regarding the cruise (travel agent contact, cruise pricing, reservation info, etc.) in the save-the-date packet. I've also set up a wedding website for them to reference for information updates. This gives everyone sufficient time to plan and budget for the wedding. I don't plan to send out my formal invitation until January 2010 after the holidays. Hope that helps.