Why aren't they fast forwarding to get to the parts where he does stuff. But even before that, HOW THE HECK DOES HE HAVE THAT FOOTAGE!? It's not like he had a reason to record himself at the time. More bullshit "because" from the author because he wanted to do something. And wouldn't they just montage through all his days of training with some voice over explaining the positive effects of it? Whatever...
And dancer being an unwanted party member?! Status buffs/debufs (like with shaman) are always nice. Though if here dance method is grinding shouldn't her outfit be more GoGo dancer than Arabian dancer.