booked with the same insurance claim code at Denver airport. One confused young man behind the counter who had to get his supervisor, who then said that they couldn't do it and started asking me similar questions about claim numbers, etc.

told them I just wanted to get a rental and if this caused a bunch of hassle to just book me a regular rate (with a AAA discount). When they entered my name again, the computer wouldn't take it!. Had to enter it with my middle name first, and a different credit card... I wonder if I will need to continue doing so in the future everytime I rent in Denver.

The guy behind the counter felt bad and upgraded me to an H3 (very handy in the snow of Southern Colorado where I needed to go), however, if you ask me if the extra hour at the Budget counter was worth saving $20, I would so no...

Based on that experience I could not recommend using the code unless you have the insurance claim to back it up...