I sent out my wedding invitations in the beginning of May for our wedding that is on September 22nd. We invited 182 guests and the RSVP deadline is August 16th. I still have 99 people I am waiting to hear from. I got a bunch in the beginning but within the last few weeks I haven't had a single RSVP come back. I provided the traditional response (addressed and stamped) and I also gave an option to RSVP online. I am starting to get discouraged ... is this normal?