Don't forget to collect sales tax. At trade shows, you will take orders with the promise to ship after the event. This can be risky because buyers may or may not pay promptly when billed. Don't hesitate to ask for and check references. Remember, good references do not ensure reliability.
References only provide a basis for deciding with whom to do business.
Before the event, acquire a sales tax license. The Alabama Department of Revenue issues state sales tax licenses and provides information on collecting sales tax and procedures for sending in tax payments. Also check with your local city clerk's office to find out if you need a city sales tax permit. Close the sale. Don't be shy.