I almost always do better with the AAA rate but not always. You need to try them all, and even combinations of them, sometimes the results are fairly amazing, other times not so much.

I know that's not the answer you want to hear, but my experience is there just isn't one code that works all the time.

Though Connecticut AAA has been very good to me, and you can often stick another discount promotion in there to get it even less.

BJ's which I assume is the same as Costco's or close, has never been the lowest, there are times the price with no codes is lower.

One trick I've found is to keep checking whenever you get a new code on your exhisting reservations. Leave the box checked for use current discount or whatever it is when you modify it, and put the new code in and reprice. Sometimes the savings are dramatic.