i knowww i have to wait until i get my RSVP's back, but I started a seating chart with 100% attendance. I love pinterest and this is how I did mine
http://pinterest.com/pin/222224562833324966/i thought it would be alot harder then it was

i'll keep it and as i get RSVP's back (in 8 months haha) I'll adjust!
anyone else using this idea whether you got it from pinterest or else where?