JC developers should be forced to learn what they’re writing!

It takes nine hours to go from London to Hogsmeade station. Yet in this latest quest, MC and Merula go from Hogsmeade, to Diagon Alley, then MC goes from there straight back to Hogwarts (did MC have a port key hidden in their robe?) leaving Merula in Diagon Alley, then back again. All in less than a day. WTF?