You and your staff may be exhausted after the long build-up to a successful event but believe it or not, you should already be thinking about next year's event! Considering everyone had a great time, send out a follow-up email and offer your registrants a discounted rate for next year's event if they register for it now. Or offer them a "returning participant" coupon that they can use when you activate next year's online registration form. Another smart thing to do is send an online survey out to your participants and ask them what they liked and what can be improved upon for next year's event. You can offer your participants a free gift or registration discount if they complete the form for you. This participant feedback is extremely valuable and will help you get a sense of the participant experience on the ground that many event organisers are so often shielded from on event day with so many administrative tasks to juggle.