We used snack credits on the tier 1+2 items in the bakery (bagel, muffin, cookie, etc). I believe fruit counts as well. That's all we purchased but there might well be others.
This is what was included in the past:
CORONADO
1/2 gal. milk
1/2 gal. orange juice
liter of soda
Cinnamon rolls
Muffins
Cookies
Croissants
Baguettes
Danishes
Banana bread
large bag of chips
ice cream
fruit bars
Chip & Dale snacks
Jelly Belly jelly beans
Box of Entenmann's donuts
This is probably what is included now (although I can not confirm it)
CORONADO
Cinnamon roll
Muffin
Cookie
Croissant
Baguette
Danish
Banana bread
ice cream
fruit bars
When we were there, the items included on the DDP at Pepper Market were very clearly marked. We got huge danishes using snack credits a few mornings, and then split them between us.