Hi skremark! I noticed this is your 5 post, WELCOME to The DIS!
This is all I could find for you, maybe someone else has more info.
To find out what's "in production" upon your arrival, visit the Studio Audience Center located to the right of the main entrance turnstiles to Universal Studios Florida. For future production scheduling, please contact the Studio Audience Center at (407) 224-6355. You may also contact NickelodeonÃ¢ÂÂs Production Hotline by calling (407) 363-8586.
To become a audience member I remember just standing in line for the Nickelodeon Tour or some type of tour and we able to sit through a taping of Round House, anybody remember that show?