It's simple, all you need to do is say one positive and one negative thing about each Disney world in Kingdom Hearts 3. It has to be a genuine pro and con, it can't be a damned by faint praise kind of thing (can't compare to something unfavorably). No repeating the same thing for different worlds either. If you're really struggling for something you can nitpick.
Olympus:
Pro: The scale of the world is amazing, and is a perfect introduction to what players can expect across the game
Con: The lack of a Coliseum arena feature
Toy Box:
Pro: Verum Rex is a really cool addition and also provides foreshadowing
Con: The context as to Andy's absence isn't made as clear as it could have been, and is inconsistent with what we know of Xehanort's abilities.
Kingdom of Corona:
Pro: The Grim Guardianess boss fight. Incredible music and takes absolute advantage of the environment like the tower.
Con: Some areas it's easy to get lost if you aren't consulting the map to navigate
Monstropolis:
Pro: It's the return of the Unversed
Con: Vanitas isn't a boss
Arendelle
Pro: The Let it Go sequence
Con: Re-assembling Olaf. Yes Donald, we get that everything looks like Olaf.
The Caribbean
Pro: Amazing graphics, the photorealistic really sparkles and shines (and not just the ocean!)
Con: Collecting crabs. That's a hilarious statement out of context.
San Fransokyo
Pro: The bridge scene on the second day, and how it evoked the clock tower scenes from KH2 and 358/2 Days
Con: The Dark Baymax boss fight is underwhelming
The Hundred Acre Wood
Pro: Perfect for harvesting ingredients without Donald or Goofy piping up
Con: It's the same mini-game three times over with minor variation in clearing areas
It's simple, all you need to do is say one positive and one negative thing about each Disney world in Kingdom Hearts 3. It has to be a genuine pro and con, it can't be a damned by faint praise kind of thing (can't compare to something unfavorably). No repeating the same thing for different worlds either. If you're really struggling for something you can nitpick.
Olympus:
Toy Box:
Kingdom of Corona:
Monstropolis:
Arendelle
The Caribbean
San Fransokyo
The Hundred Acre Wood