Any downside to booking a Wanna Get Away fare with points?

Quick question, is there any disadvantage to booking a basic (Wanna Get Away) fare with Rapid Rewards points?

I know if the price drops, I can cancel and rebook, and both the points and taxes go right back. Other than the minor hassle of doing that, is there any real downside? Or is it smarter to book a Choice fare when using points?