You will need to be an “Alamo Insider”. Registration is free at the Alamo website. Make your reservation however you normally would (I use Costcotravel.com since we have a Costco membership). Then go to the Alamo website (if not already there) and associate your Insider account with the reservation. That will allow you to do on-line check-in followed by skip-the-counter (which requires credit card information in addition to the on-line check-in information). Print the skip-the-counter form or save the bar code to your phone. Go directly to your the appropriate aisle to choose your car. Not as simple as the National Emerald Club, but Alamo rates are generally better for leisure travelers.