Originally Posted by Thunderroad

I've searched and couldn't find the answer.

I believe I've occasionally seen references here to discount codes (or something to that effect) whereby you can get 4 nights for the price of 3, or 5 nights for the price of 4...or something to that effect. Now, maybe I'm just confused (wouldn't be the first time!) or mis-remembering. But are there such codes? And if so, do you have to plug them into a booking to get the discounts, or will spg.com automatically apply them if available for a given hotel and dates?

Thanks for any clarification.