I'm reasonably sure they do. I don't think there's any way that the teams, on all the shows that require large pieces, can whip out a pad and come up with an elaborate plan that everyone agrees on while we watch. Also, as we saw tonight, the sugar artists already have molds for exactly the pieces and parts they need.
I was sure I knew which team would lose at the end but I wasn't sure whether the giant rabbit or the one with the fountain would win. I was happy with the judges' decision partly because I wanted that team to win and partly because Tator is so obnoxious. He does have talent but he's not the world's greatest as he seems to think.