Number your RSVPs! Smartest advice I saw on Pinterest for wedding planning! Number the bottom of the RSVP card and log who has which number on a spreadsheet. Easiest way to track who still owes you an RSVP. When you don't get them back (and there will be many that you won't, its just how it goes) you know exactly who to confirm with. GENIUS!!!
Once the big day gets a little closer, you may find yourself stressing about the simplest details, like when during the processional to send mom down the aisle. There is a method to this madness, so feel free NOT to reinvent the wheel. Take a look at this graphic via Disney to learn the order of a traditional wedding processional.