What is and the difference between Themepark and Sandbox MMORPG?

Ok, i've been playing WoW on and off for a while (HAD 85 mage, 80 rogue, etc - now deleted :D),


and sure i'm not into MMORPGs hardcore, but now as I purchase pre order SWTOR, I'm hearing Themepark and Sandbox MMORPG?





I know what a sandbox is for a programme, but mmorpg? How about themepark?





Quick google tells me nothing.





Thanks.|||A sandbox is just that, a sandbox for you to play in.





An example would a game with no classes or quests. Players would choose what they wanted to be good at while they were playing, not selecting a pre-existing class. Or no quests, players would create their own adventures by thinking up things to do on their own.





Those examples might not be the greatest, but here's the jist of it.





Basically, the difference between the two is that in a sandbox players create their own fun with the tools they are given, whereas in a themepark, the fun is already created, say a quest with a completely linear ending, and you're just along for the ride.