Wow, so glad I found this thread today, just saved and additional $34.00 for my trip in September using the Entertain code on an Intermediate car.
I tried using the Fish, FVG, MCC codes for the same time period and they all came out to 174.99. But I had already had a reservation for 159.00, so I'll just cancel that and have already made one for 125.00 using the Entertain code.
Thanks to all!!!! You gotta love saving money like this!!!!