I have had mixed expereinces at DSM. Generally, they are good and it seems that I as travel there more frequently, the level of service I receive has improved. As an Executive Elite Emerald Ailse member I am accustomed to complimentary upgrades through the ailse. At DSM they sometimes provide the upgrade and sometimes not. It seems this is dependent on how the agent is feeling on a particular day, although I have noticed a trend of improvement over the past several months. Overall the vehicles have been OK, they are generally clean and in good condition when I rent, and I can usually get a car I like for my trip.
I may have waited for my car, however the young lady behind the counter was very kind and brought the car to the curb for me. That was especially appreciated since I had ripped my MCL in my knee. It was stressed beyond comfort after running through Atlanta and then Des Moines. I truly appreciated all the care and concern they showed me. They were helpful in finding a replacement after my reserved vehicle class was sold out. My hats off to this National location.
Unfortunately this is one of the National locations where you can't just pick your car from the lot and go. You have to stand in a line like every other place. This location doesn't seem to be very organized as they have frequently not had my reservation ready or somehow removed my emerald number from my reservation. National is still a great way to go but don't expect what you get at larger airports from this location.