Key-mon? Monkey!

And this would be the essential Final Fantasy reference. This, too, is about monkeys. In FFX-2, there's a sacred place that in X was the goal of a summoner's pilgrimage. The pilgrimages are no longer necessary, and the tourists are moving in...

...Until Yuna, Rikku and Paine find the monkeys, pair them up, and encourage monkey love. The monkeys multiply, and no one wants to go to the sacred place anymore.

(Except my sister. She'd probably do a lot to get to go there.)