Naw, the nets won't work. That would just entice some to climb down into the nets for a night of romance! Then the others who did flop their arse overboard would just climb around on the nets til they could jump from the nets into the water-- and too some might get tangled up and hang themselves in the netting--- then the cruiselines would be in for a lawsuit.
It'll be the enclosed thing--no open deck space at all. RCCL will be in trouble when they start making their interior cabins with balconies that open onto the Promenade--can you imagine 5-600 people milling about in the Royal Promenade when some drunk flops off his interior balcony and splatters all over the gold-by-the-inch table ???