I think i k ow the answer to this, but we sent save the dates early in the planning process and were pretty liberal in doing so. However, there are a couple people we havent talked to since sending them (about 7 mths ago). At the same time, weve gotten close with others we would like to add to the list but were also more conscious of costs. How bad would it be to not send an invite to someone who got a save the date?