the amusement park scene when Roland talked about "these ancient ruins - nobody knows what they were". The demon/monster chases after Jake and Jake jumps on the ancient monkey bars and the demon/monster is up there on the monkey bars with Jake. If these ruins were so ancient, they wouldn't support the weight of Jake and certainly wouldn't support the weight of Jake AND the demon/monster.
Did like the Pennywise at the beginning of that scene though!
Anywho, the best casting imo was the kid who played Jake. MM is dangerously approaching De Niro and Nicholson territory, meaning they are more of a caricature of their former acting self. I still would have preferred new/unknown actors were chosen for the lead roles. There was almost no hint of the high speech. I only recall hearing one "sai" and it was from one of the "village people".
For me, this was "A" Dark Tower movie, not "THE" Dark Tower movie.