Is there a general rule of thumb on how many save-the-dates you should send out if you want 250 people at your wedding? I've heard of sending out rounds of invitations based on responses, but how do you handle the save-the-dates? Should we send out 350 to be safe? I'd feel awkward sending out so many save-the-dates and not following each one up with a formal invite. What do y'all think??