A brief paragraph from a review by ElectricPig:

The replay value in The Sims 3: World Adventures is considerable. When you arrive at the Base Camp of your chosen destination, you pick your adventure from a notice board, stock up on provisions and then try to complete the tasks within the allotted time. Initially you’ll only have three days, but when quests are completed your return visa will be extended, with greater rewards on offer. You can even build a holiday home.

review here