Quoted from Whysnow:
It really is not that difficult. I like your chair idea as an organizer, but find it very boring as a player.
Getting enough helpers and score entry is by far the biggest trouble for me so far.
What is easiest to manage for the tournament organizer isn't always what is best for the player, but successful tournaments overall, as opposed to mayhem, are always what is best for pinball. Both the queue system with cards or chips and line systems with chairs that are being discussed have been used many times. The chip / card system is fine when everyone knows everyone else and the tournament is small. On the other hand, when you have hundreds of people coming into the tournament area, most of which are total strangers and many of whom have never played in a competitive event, the chip / card queue system fails. A line of chairs is always easily understandable and efficient to pros and novices alike, even if it's not the most "fun".