You only had one job to do..... as designers, we have to provide at least the minimum number of toilets to public buildings as set out in the Building Code (and Acceptable Solutions) for when the building is at its maximum capacity. This includes stadiums.
So, imagine the surprise Cantabs felt last weekend going to a sold-out concert at the new One NZ stadium only to find a number of them had to use Portaloos outside because the designers provided enough toilets for the requirements of the seated capacity but forgot that, for concerts, the number of people there increases.
DOH!!!!