There is a few things you can do.

1. Chocobo Races (Two trophies)
2. A riddle game. (No prizes)
3. Take photos. (No prizes)
4. Find Mogs. (No prizes)
5. Fishing (There is new types of fish)
6. Learn two recipes
7. Find Chickobos. (No prizes)
8. Plus there is 3+ items you can get only by collecting Choco-Mog Tokens. (This is a paint job for the car, a chocobo egg which no one knows will do, and more I can't remember. Stuff like the ticket to see the firework show but that I believe lands you the egg. There is more stuff to do. I just can't recall.