That was excellent! Quite a different game to Pokémon Y, although not in the way it is sold: No gyms! No gym leaders! No HMs! No, except trials are almost exact replacements for gyms, captains are virtually the same as gym leaders, and the Ride Pager replaces HMs. Net difference, almost zero.
What’s actually different is how the UI has been improved, with tweaks like being able to immediately put a caught Pokémon in your party. And the streamlined box management, simpler local trading, being able to see move effectiveness (against Pokémon you’ve already fought or have caught) – stuff like that.
Mega Evolutions are gone again, but Z-Moves are really pretty similar replacements. All of the PSS has sadly been stripped out and although the system that is here as an alternative (a mix of the Festival Plaza and Poképelego) is good, it lacks the always-on abilities, Streetpass, and the online web-based games you can play outside of the main game. Since the full announcement of the Nintendo Switch – which doesn’t have Streetpass, but does have a version of Pokémon Sun/Moon coming for it – it’s perhaps clear why this is the case. Anyway. The new features are great for levelling up a load of Pokémon at once so it gets a pass.
As for the game itself, 66 hours is a lot. Not far off twice how long it took to complete Y, in fact, and I’ve not even started the post-game content. I assume there is some (other than just filling the Pokédex), anyway.