Question for early rsvp

We came up with the idea of sending out "save-the-dates" which we will order on Vistaprint when they have a great deal going on. We will have the RSVP details on the "save-the-dates" in hopes that people who know they definitely will not be going can RSVP early and those that definitely wouldn't miss it for the world, will RSVP right away. This way, we hope that we can replace the "no" people promptly. Our guest list is currently at 66 - which needs to be closer to 50. We know of at least a few that will not be able to attend, but being that they are important, we want to ensure they receive the option also. Keep in mind, we have not yet sent out our "save-the-dates", so we aren't sure how effective this plan will be. But it is an idea...

Would it be weird? Maybe. Would it be okay to do it? Absolutely. You're trying to get a feel for how many guests to expect and you can approach that any way you'd like.

I don't see any harm in asking though their plans could change and you wouldn't know unless emailed or called in person.

I don't think that's wrong to ask at all - if they are a maybe, then ya - they will stay as a maybe but if they know that to travel that far or that date doesn't work then it's a great way to get it out of the way early on.

I'm sure that people will understand you looking for an answer early on if you explain through word of mouth your reasons.

I know with traveling guest they will be staying with me or other family as they always do when in town, and they do tend to drive over (from the US) its more of my guest in town that are the 50/50 the outside guest they have said they cant wait for the wedding so we are counting them in as a yes,

Asking for an early response/RSVP without any information of the timing or details, its hard to confirm an answer. Also consider that out of town guests have to make flight & travel arrangements on their end.

The wedding invitation will have your set date of RSVP and that will be enough for them to reply as they have made the arrangements by then. The venue only will get their numbers as other vendors towards the month of the wedding so they are all confirmed and set.