So I opted not to send STDs because 98% of our guests are in town and will know when the wedding is before they get their invite. Also, we were still trying to decide who would be invited, so several people I'm on the fence about sending an STD to. However, now I'm worried I should have sent them, and I think its too late to do it now. Are they really necessary? Would it be stupid/too late to send them now?