Could be but it also depend on where you live, if anybody here (the Netherlands) for example says they've been to Disneyland, everybody will presume it's been to the one in Paris, unless you explicitly say it is the one in the US or elsewhere, and small kids don't know any better then the one in Paris anyway.
It even meant that when I was in Orlando I went to Epcot first, I still went to Disney World and some other parks the days after though, even after being to the ones in Anaheim and Paris before, just because I like theme parks
. Even been to the ones in Tokyo and Hong Kong later during my travels around the world
. And they really are all almost the same no matter which one you go too.
But most countries (or even states) in the world have there own "Famous" Theme/Amusement Park(s), which everyone knows at least locally, where you go with the family. So a Modern Age (neutral 1 per civ) "Amusement Park" in game could be OK.
Though the new Water Park even looks like a Ocean World amusement park with a Ferris Wheel, Aquarium and Aquatic Center, it even got Sea Lions in there
. And the Entertainment Center looks more like a Circus, before the Stadium is build.
So Disney has maybe the best known commercial "Brand" name for amusement parks, it doesn't mean to me that they are a world wonder.
Not to mention Las Vegas which is more an insane real civ city with a lot of (fake) world wonders build in it. I still enjoyed the place a lot though but nah, not a world wonder to me either.
.