Where they went, what they did and everything else was decided via their website at www.101challenges.com. Blades Of Thunder is #6 listed in their challenges page. The challenge read:
Fuji Ice Palace in Singapore offers ice-skating lessons to Torvill and Dean wannabe's. We will take one day of lessons each and then perform the Bolero in diva style costumes!
Anyway, they ended up doing this at Sunway Pyramid in Kuala Lumpur instead, and here are the videos (in two parts):
It is impressive that they can put this together in 10 days, starting from zilch!