By the way, if you'd like to see photos of last year's BunnyBot Scrimmage, some can be found at
http://www.team1540.org/BunnyBot09
As you can see, BunnyBots is an informal affair and pull off. It's held on a course half the size of an FRC course with two robots per alliance. Ours is held in a covered tennis court but a high school gym would be fine as well.
Many of our new members have more fun with BunnyBots with it's relaxed schedule and rules than true FRC where they, being less experienced, can't have as central a role as veteran students.
BunnyBots gives everyone a "magnetic field" to align to in the buildup to FRC kickoff. It's great for team building.