Our RSVP deadline is tomorrow for our wedding. I see my coworkers everyday and they've had 3 months to RSVP. On Monday, I told them at work that the deadline is Friday. They said thanks for the reminder and didn't RSVP. One person said thanks and then went on a week long vacation and won't be back until next Wednesday. I find it weird that they're not RSVPing after I've given them a reminder or two. I've also texted a friend reminding them the RSVP deadline is Friday, but I've gotten no response from them about that. I'm not sure what to do -- do I keep bothering them to RSVP if they don't RSVP by tomorrow, or do I just mark them as declined if they don't get back to me?