Stupid. Nothing new.
Some people might fun this is kinda cool, but it seriously is really pointless. So what about having your park in Africa or China, no one really cares about that! The additional national rides are the same thing as the old ones, just renovated with different designs and a name that pertains to the country. Whoop dee do. So what. And you can only add these additions if you play in the country's park. You can only add the Chinese food booths to the park in China, or add North American scenery and attractions to the American parks. It seriously is a waste of an expansion pack.
It may seem fun at the beginning and when you're new to it, but after a few hours, it's just boring and nothing exciting. The expansion pack itself is even overpriced; who wants to pay 30 bucks for nothing when you can buy so many other interesting and worthwhile games instead?
So save 30 bucks and buy some game that you can have fun with.