If you are gonna play this game then you need OpenRCT2 for bug fixes, more stability on modern operating systems and new features. This version also doesn't have the awful mobile UI of RollerCoaster Tycoon Classic.
That being said, I have a lot of nostalgia for RollerCoaster Tycoon 2 so I'm far from an unbiased reviewer. All I'll say is that the game allows for a great deal of freedom and optimization when it comes to the gameplay, and it also has a lot of content when it comes to rides, scenarios, decorations, etc.
It's not a hard game either save for the levels specifically designed to be challenging, which I think is appropriate for the subject of amusement parks. It provides the satisfying feeling of building a clean, nice looking park with lots of roller coasters and rides, and then watching things unfold from a distance, always on the lookout for expansion opportunities and fixing whatever issues that may arise.
To conclude, RCT 2 is possibly one of the greatest management sims ever made and there's hardly any reason not to recommend it now that there's a free fix for the shortcomings older games tend to have in the form of OpenRCT2.
Also, in a completely unrelated note, the scenario I played the most as a kid was Bumbling Bazaar, but sadly I can't remember why.