Consider using the Advanced Check-in and Self Check-out features to allow your guests the option of checking in online prior to your event and/or checking out on their smartphone. Even if most of your supporters are "old school", allowing those that appreciate the shortcuts to make use of them will reduce the lines (and stress on your volunteers). If it seems like a lot of work to set up self check-out for a few - it really isn't - and imagine how happy it will make your supporters that just need to pay for drinks, raffle tickets and a paddle raise. . .