You always have to fill out a tag, but I have always gotten one from the fuel truck driver, filled it out then, and then filled my own tanks. I just keep my eyes open for the truck when I'm around the airplane, and then flag him down. It's usually very easy during the couple of days before the show actually starts. I then go over to one of their booths & pay sometime during the week. I'm pretty fussy and have always filled my own tanks... I've NEVER had a line boy or fuel truck driver do it in 25 years of flying my first homebuilt. There are just too many careless &/or incompetent people nowadays, even to accomplish such a simple task, and it's too important & critical to me.