Artie is doing great and can pretty much do everything his "normal" siblings can do. I do need to monitor his diet a bit more closely. He currently weights a bit more than he should, so we're working on helping him lose weight. We need to make sure he doesn't put too much weight on that front...
You might check your local pet store's return policy. The PetCo in my town permits (with receipt) the return of opened food for a refund if the pet doesn't like it. According to the clerk at the store, this policy varies a bit between stores.