My FMIL's friend (invited to the wedding) offered to host a shower but unfortunately invited guests she assumed were invited to the wedding, but were not. We already have a large wedding but are limited by capacity of the venue. Invitations to the shower have already been mailed (my Save the Dates have also been sent), so I have to add to the wedding guest list. My FMIL has offered to pay for the extra invitees, but the problem is not cost, we may be over extending our capacity now. My biggest fear is that we will have too many RSVP yes to fit at our reception seated dinner! What are my options? Are there any?? The wait and see approach terrifies me!