Stupid players can be fun when they are trying to play strategically. Candace doesn't seem to have a strategic bone in her body, though. In Cook Islands she mutinied despite being safe on her current tribe, and close to the merge anyway. She pissed everyone on that tribe off just so she could get back to Adam one round earlier. Granted, she didn't know the merge was so close, but it could be reasonably assumed.
In Heroes vs. Villains, she flipped to Russell's alliance despite having witnessed how close they were, and knowing that by taking out her former allies she'd be making it impossible for her to win.
Neither of these blunders were 'entertaining', rather, I found them frustrating. As I mentioned before, by doing stuff like this she screws over people she's aligned with as well. She's a doctor for crying out loud, you'd think she'd be a little more capable of independent thought.