So I'm working with a really small budget and I've been looking into invites. I was thinking of just using postcards and then having people RSVP either online or by calling us. I don't really have the budget to give everyone reply cards and stamped envelopes anyway, so I figure this could save even more money to put towards dinner/bar for my guests.
So I know etiquette has changed a lot over the years, but would using just postcards be too cheap?