It was the episode where a passenger gives birth aboard the ship. The Captain announces the news of the birth to the ship and all of us on the pool deck burst into applause and cheers. I was standing on the Lido Deck as it crosses over aft of the Riviera Pool. I was on the left side of the TV image, standing by a Princess logo banner they had tied to the railing.
It was at the end of the episode. Not worth looking for it since it only lasted a few seconds.