One of the Best ways to correct it by, letting people take the 2 seats when there is the 3 left. Then use that "odd" 1 seat for the Give Aways they do. Alot of people like Staff gets Free tickets. Use these odd number just for that. When three comes up, mark the odd one filled and Let People pick them when there Turn comes . Just one example on how to give people a fair shot at these seats if they want them.