Before obtaining a license as an operator, slot machine manufacturer or distributor, associated equipment supplier, key employee, support licensee, or retailer, in addition to meeting other requirements of this article 30 or rules of the commission, an applicant must show that he or she is of good moral character. An applicant has the burden of proving his or her qualifications to the satisfaction of the commission. The applicant must submit to and pay for background investigations the commission may order. All payments shall be deposited into the limited gaming fund created in section 44-30-701.