Went to a local Walmart and exchanged it. They had only one 32GB HD+ left, so that was lucky. Hopefully it'll be okay. Keep your fingers crossed, please.
Interesting fact: The manager who authorized the exchange told me that since I had used Walmart's Ship-to-Store function for the first purchase (ordering it online), that I couldn't do a straight exchange in the store if the store price was higher. I would either have to pay the difference or else do the exchange via the online site to keep the price the same. Since today was the last day of the Nook sale, the store and online prices were the same so it was no problem. But I thought that I'd pass that info on.