Hiya mcnuss. BRP stands for Best Rate Program. It is a new program for those with annual passes. You book 60 days (or more) ahead of your trip and Disney promise to give you the best rate available to the general public for your accommodation - so if you book at x price and the rooms are later discounted Disney applies the discount for you automatically. Of course there might be no discounts at all and you have to pay one night up front (non-refundable) so it's a bit risky if you're really relying on discounted rates. There's probably a bit more to it than what I've said but I think that's the general gist.