There’s really no choice but to directly ask the invitees via phone,email or in person if they are planning to attend-however, you can always solicit the help of your attendants to do the dirty work. To ease the awkward nature of these conversations, phrase your inquiries like this: “Aunt Mary, it’s Beth. I hope you’ve received our wedding invitation. We need to give the our final numbers to the caterer this week, and I haven’t received your response card,so I’m calling to ask if you and and Uncle Bill plan on coming to the wedding. We hope you’ll be able to join us!” Do not point fingers or lay blame regarding their forgetfulness. After all, invitations and response cards are occasionally lost in the mail.