Let it all out!!!
I'm having the same problem with deadlines. everytime there is a deposit due or payment for airfare, i have to call everyone not once not twice but 3 to 5 times to remind, all the way up to the date it's due!!! Drives me insane. I haven't sent invites out yet just save the dates, but after reading your post, i think i'll be skipping the rsvp, i just know no one will have the common courtesy to send them back to me!!!