From the LOR page....

Entries will be judged on curb appeal, overall creativity, use of materials, exactness of synchronization (computerized shows), use of color and originality! Judging for Category 1 through Category 5 prizes will be performed by a panel of Light O Rama employees.
The Grand Prize winner will be chosen by a single judge: A 10 year old boy. Why a 10 year old boy? We feel it is more in the spirit of Christmas. He will not be sub-consciously influenced by the size of the house or the number channels or the number of lights. The judging becomes simple: "What is it that makes a child smile?". We feel this it the best way to pick the Grand Prize winner. Also, because a 10 year old is not predictable, everyone gets a chance win.
By entering the contest you agree that video of your display may be added to the Light-O-Rama website. Please include what information (if any) you want included with your video (your name, town, a write-up about your display )