As I check daily, I've noticed that many times the Disney Club discount doesn't "show up" per sey (sp) but I think it's reflected in the weekly/daily price. Sometimes no discount is visible but it's cheaper than my reservation. Other times both discounts are visible. It's weird!
I think you may be on to something. When I called to see what the non-online rate would be, I was quoted a price of $183. She gave me the total and it was the same as my online rate.
I put in the DC one day free and it accepted the code. With taxes the total was $178. now, I don't know if they would honor the code because the coupon says that it is for a 3 day rental, but the website accepted it.........................