I think that if you want to see the waking of Tink, plan on being there as the park opens. It only happens once a day. The store is Tinkerbell's Treasures and is located on the left after you pass through the castle. I didn't see the waking of Tink but here is what is supposed to happen...
They give the kids a "magic wand" and they tap on the box three times and each time said, getting a little louder each time, "Wake up Tinkerbell". And then a light kind of floats across the room and a sound comes and Tink has woken up.
If you miss the waking, you can still see Tink by looking in the key hole of the chest.