my fiance and I do not drink, and my side of the family also does not. However, his family does. We feel strongly about not having alcohol at our reception, and have discussed the idea of an afterparty with his family. Our reception is at a rented hall, but will consist of an light, late-afternoon meal and live jazz. We plan on the reception only lasting until about 7 p.m. (when we'll leave). His family was then hoping to just have the after party at that same hall, as we have it booked for the whole evening. Is there a polite way to do this? If so, do we just send invitations to the after-party to the guests they want to stay, or is that tacky?
It would be best not to include a separate invitation to this. The party would just carry on without you. Your inlaws would have to be prepared to host this event with all of the guests. It would not be polite to exclude anyone.