With the obvious caveat that it’s Japan, you only have to look as far as Universal Osaka to get an idea of what they can do with Pokémon that isn’t a ride. Meet and greets, parades, themed food, endless merch, etc.
What’s great about Pokémon as a theme park IP is that it can fit anywhere and it’s endlessly adaptable. What’s less great is most of the environs are pretty much a blank slate. I spent many hours playing Pokémon Red as a kid and there really isn’t a locale I’d be dying to go to.
That’s okay! The characters are the point. Which is why I kind of like the idea of it taking on a more “explorer” vibe in Islands of Adventure as opposed to a “city” vibe in the Studios park.