Of course, there will generally be a few attendees who show up without having pre-registered.  There’s an easy solution for that!  InstantCard will print up an pre-determined number of generic badges, which look identical to the pre-printed badges, except without the attendee’s name.  A simple label-maker is used on-site to add the name, and insert the badge into a badge-holder, and voila!  This is a much, much simpler solution than all the effort and hassle associated with transporting, setting up, and operating multiple fragile printers just for a day or two at the start of an event!