A word of warning about using AWD codes you are not entitled to use. I have rented many times with Avis using a discount code associated with an education institution without issues.... All the way up until I had an accident in a rental car. Part of the AWD code was a reduction in the insurance deductible from $5000 down to $100. The process of reporting the accident required me to prove my association with the institution which I was not able to do. Avis initially attempted to void the rental agreement and went after me for the value of the vehicle plus lost business costs (approx. $25,000). I fought with them for nearly two years and was able to get the fee back down to the original deductible of $5000. I ended up giving in to the $5000 as they threatened to take me to court and claim that I used a discount code I was not entitled to use.