During his 80s stint on "Deal," Dick Carson did an article for a trade in which he said that doing the prize presentations after the shopping was the main challenge for him as a director--his goal was always to get the cameras and the limbo items together in the right order the first time so he wouldn't have to do pickups later. He didn't say what his success rate was. He also didn't say how frequent it was that the visuals were perfect, but the audio was blown by Jack Clark bobbling copy.
I'd love to find the article--I don't remember which publication it was in.