We love DTD, although we usually just stick to the Marketplace side. Rarely venture through PI or Westside. We usually go on the first night, grab dinner and browse the stores. I like to call it pre-shopping. Get an idea of what souvenirs are there since you can find a lot in a central location rather than a few in this store, a few in that when you're in the parks.
I love Goofy's Candy Company, but it can get a little crowded especially later in the evening. They're VERY reasonable for the personalized treats - caramel apples, cookies, marshmallows, etc. You choose what it's dipped in (milk, white or dark chocolate) and then can choose any combination of toppings (all if you are so inclined and have a stomach of steel, LOL) We just came back and headed on our last night as well for an apple and marshmallows for souvenirs. The apple was only $5.50 and the marshmallow only $2.50 (it's 4 marshmallows on a Mickey shaped straw)
I have some pics of them making the apple and marshmallow, once I resize I'll post.