National rate code discount-won't work on minivan?

[Cameo]

I'm checking out prices for a National minivan in April, but want to pick it up at the Dolphin and return to the airport. Am using the Emerald Club rate code and can get a discount showing for a regular car and an 8-person minivan, but no discount for a 7-person minivan. Anyone know why that would be?

 

[canwegosoon]

No but keep trying I was just checking minivan rates and saw really good prices at Dollar(65 per day for a 7 person). I was just trying a National coupon(the internet one from the entertainment book and it would apply to the 7 person mini van...so who know why???)