How Many Non-RSVP's Guests Do you Plan For

I would plan for a 100% acceptance rate just in case.

ETA: I misunderstood. I would try to get as accurate a number as possible and then have a table set up for extra people.

Yes. Err on the side of caution and order extras.

And what do you mean "un-RSVP'd plus ones or kids"??

ETA: Also, I told my rental company that I had invited X amount of people. I had until the Tuesday before the wedding to confirm guest count. I had 187 final invited and 107 who RSVP'd yes. I order 115 chairs and an extra table so that if someone showed up who had RSVP no or someone brought an extra (yes, that happened... luckily not a big deal since I didn't fill up all of my tables) then there was space. And that way I also had chairs and a table for vendors to sit at to catch a breath or grab a bite to eat.

Well, you should follow up with anyone who doesn't RSVP until you get answers from everyone. Our chair rental company brought three extra chairs as a courtesy, so that's all we had.

I planned for zero. If they didn't RSVP, we followed up. No one told us they weren't coming and then showed up anyway. In fact, a few people who RSVP'd yes didn't end up making it.

This has to be my favorite wedding planning picture!!!! Hahaha

None.

If they don't RSVP, follow up. If folk who RSVP'd "no", or still refused to give you an answer either way after follow up, show then tough luck for them.

You'll likely have a couple no-shows so hopefully it'll balance out.

I had people who didn't rsvp, upon follow up confirmed they weren't attending and showed up. It worked out though because I had people who RSVP'd and didn't show. I also had people RSVP for 1 and bring a guest. Idk exactly how that worked out because my coordinator handle it but everyone had a seat and a meal.

Definitely follow up with anyone who doesn't RSVP...and I would think you would be able to plan for plus ones since you'd be extending that on the actual invitation, and the person RSVP'ing should indicate that they are in fact bringing that plus one or not....if you are doing seating charts and/or escort cards, you'll want to get the names. Kids should also be included on your guest's RSVP as well (if they were invited on the invitation)...so, as long as you follow up with any you don't receive, you should have an accurate count. Remember too that you'll likely not be able to fill each and every table 100% full when sorting out seating arrangements due to odd number in groups attending. We have tables that seat 10 and due to odd groups like that and wanting to keep certain groups together, we ended up with about 11 empty seats here and there throughout the reception. So, you'll likely end up having some spares built in when you get to that point.

I would set up one extra table for any crashers, but I wouldn't expect many. Most people will tell you if they plan to bring an extra person/child, even if that person isn't actually invited (in which case you can let them know they cannot be acommodated). And if they don't RSVP you follow up with everyone. But in your situation, on the off change, one extra table should cover it if it is needed.

None. Seriously. Adult should get that they need to RSVP; it's bad enough that you have to chase them down; I wouldn't even do that.

My wedding may be a little nontraditional, but it's only a small wedding of roughly 40 people. I'm having 1-2 empty seats per table so people can get up and mingle with others as desired throughout the evening. My mom did that at her wedding and got a lot of compliments on it because people liked not being stuck to their seat. In relation to your question, I'm planning to have the extra seats available should an unplanned guest show up. I'm having it catered by the venue and it's served sort of "buffet" style (not my preferred choice, but the only way they offered). I may plan to order 1 - 2 extra plates just to be sure but I'm hoping I won't have to. I'm sure I'll have a better idea closer to my date.

I would do none, but account for vendors who may eat if that is a part of their deal.

To reiterate what others have said, if you're giving your guests the options of having a plus one or bringing kids, you need to know those numbers. Your caterer will want a final head count, including plus ones, kids and vendors. For the people that RSVP no and come anyways, well there's no helping people who can't adult properly. But it would be extra nice of you to get a handful of extra chairs for those people anyways.

No one came to my wedding that didn't RSVP yes...this is why you follow up on anything you're missing after your deadline.