To make it to the executive level, which lets you choose from either of the two aisles, you need to rent a total of 40 days a year or more. We average about 50 days a year so have been executive members for many years. Sadly with the cost of national compared to other companies it getting hard for us to stay loyal to them. There are some other perks to executive level too like being guaranteed at least a full size car at the intermediate car price and getting your free days quicker. This info is all on their website.