Doing so will freeze the opposing hero for fifteen minutes.
The others could use their power only a few times one team could use theirs just once.
Where else they could meet celebrities from so many diverse fields in the same place at the same time? Like stated in the recap, it was pretty much just a parade of guests leading to some supposedly epic showdown, which we have to wait a week to watch.
After all the numbers had been found by either of the teams, they approached the main door and entered the code which they believed was correct.