Having a two-year engagement has saved us a ton of money! We booked our venue and caterer super early so the prices would not go up. We have been able to do a ton of research on what places/vendors are the least expensive without sacrificing quality. We saved a lot of money on saving the dates and invites by waiting for deals to be emailed to us. It's also nice because we had four birthdays, two Christmases, and two years worth of tax returns between the time we got engaged and our wedding.