Taking attendance using vbspro.events

I am the VBS director of a mid-sized church.  Each year at VBS we have around 280 kids that attend.  The first night is crazy with getting everyone in and to the right place.  We also have a little bit of a bottle-neck in our foyer trying to get those who did not pre-register registered.  We find it difficult using the attendance check in system that comes with the vbspro.events program to keep attendance because we are trying to move the kids along as fast as possible.  Does anyone else who uses this program face this problem and if so, how have you dealt with it?  We have resorted to having the crew leaders check off kids names on an individual crew attendance sheet and then handing it in at the beginning of the first rotation.  Taking attendance kind of puts a little damper on the excitement of coming to your first station.