The Prudential Center always, to the best of my recollection, had a policy in place prohibiting noise-making devices (i.e. Whistles, Air Horns) for New Jersey Devils games. It was not uniformly enforced, as fans routinely brought in stadium horns, cowbells and the like.
Traditionally, the Red, White and Black have been welcomed to the ice from the locker room with cowbells while the vuvuzela seemed to have two primary purposes. One was as part of the “Kill, Kill, Kill” chant activated while the Devils were in their own zone during the penalty kill.