but, here is the site - I'm too lazy to call, someone else should tho:

http://www.radiocity.com/A_ZGuide.html#c

Cameras
For the Christmas Spectacular and other family events, 35mm and digital cameras will be permitted into the Music Hall, however, you must refrain from taking pictures during the performance. Taking photos during events is distracting not only to the performers, but your fellow patrons as well. Video cameras/recorders are strictly prohibited. This policy will be strictly enforced.

For concert events, this policy is at the discretion of the artist. Please call Guest Relations at 212-465-6225, any weekday during normal business hours, for more information.