My wedding is June 28th I sent out. STDs in late November and the formal invites in May. After receiving STD majority of the people said they were for sure coming. Which I was excited but a littke nervous because I over invited to compensate for people not being able to come. Well I was waiting on RSVPs and I didn't get some from people who told me they were definitely going to be there. I checked up on them, and many had random excuses some legit but most not. One girl said it fell on the same day as her sisters wedding. I thought this was rude because she knew long before I sent out the FI that she couldn't make it. Yet I had to track her and a few others down. I wish people would step it up. Give the bride and groom opportunities to expand their guest list if you know from the get go you can't make it!