DS and I went to see Ninja Warrior UK being filmed in Manchester a couple of years ago.
Huge hangar-type building (obviously, to fit all the obstacle equipment into), and we had arrived quite late so had rubbish seats where we really couldn't see much. However, as people were leaving, they kept taking sections of the "far away" seats and moving people up the "premium" section, so after a couple of hours we ended up in prime position. I guess people were leaving due to having trains etc to catch, younger kids getting tired etc.
DS loved it, but we didn't know that you could bring your own food and drink, poor DS was surviving on the free Haribo that the compère was throwing to the crowd. And he was so thirsty but I couldn't find even one drinks machine.
Rochelle was hardly to be seen, only came out when the competitors were actually "on" and didn't even glance at the crowd. Ben Shepherd and Kammy (or "hammy" as DS kept calling him) were visible all the time and seemed to do more actual work - often doing retakes, for which we'd all be encouraged to whoop and cheer during. The "crowd participation" was actually exhausting - you had to go nuts for every competitor and there was a very hard working compere working between competitors to keep everyone gee'd up (hence the free Haribo being thrown like confetti). DS and I were shattered by the end!
The giant foam finger was DS's favourite thing, but alas, he must have dropped it in McDonalds at the train station on our way home and we didn't notice until we were walking back to the car carrying our milkshakes.
It was filmed almost a year in advance but we did tune in and we saw ourselves in the crowd a couple of times - and yes, DS could be seen eating the Haribo