Preview.
https://www.youtube.com/v/C2-mMnvrVhQ
https://www.youtube.com/v/YIUc8iomYLo
Guessing that the Detour will be beer-themed (as we know from TAR 15, the Czech drink more beer per capita than anywhere else in the world).
One option seems to be stacking kegs on pallets. The other option appears to to take place in a beer spa. Closest match I can find is Spa Beerland.
(https://www.eatingpraguetours.com/wp-content/uploads/2014/09/Spa-Beerland-Prague-1.jpg)