Nice idea,BUT ou have to complete the moon cave,wich you can skip in speedruns. A speedrun of this category is such impossible to subhour,but can be possible under 1 hour and 45 seconds.

I calculated some speedrun,this category would be so long,a glitchless is 3 HOURS LONG Minimum.

Okey

Is it allowed to record your switch with a camera,and to have a real chronometer?

yes not very cool idea,cuz you will just repeat like 20 the festival,collecting all the coins... Not good run M8