American Hotel and Lodging Education Institute (AHLEI) – Certified Guest Service Professional. Customer service is vitally important in all businesses; this is especially true in hospitality. Through Guest Service Gold, trainees learn how to anticipate guest needs, deliver memorable experiences, and turn around difficult situations. The Certified Guest Service Professional gives job candidates a marketable edge when applying for their first hospitality job. This ten-hour course is a prerequisite for Hospitality Food Service Careers, Maintenance Technician, Front Desk Representative, and Guest Room Attendant. The course provides the foundations for customer service in any type of hospitality environment and prepares learners for the Certified Guest Service Professional (CGSP) exam. The CGSP credential is recognized worldwide in the hospitality industry and is the highest acknowledgment of award-winning guest service for employees in the hospitality industry. Scholarships available for individuals without other funding. For more information, complete this form.