AAA's Diamond rating program is the only hotel and restaurant review system in the nation that uses specially trained full-time field representatives. As part of AAA's national network, the Auto Club's own staff reviews establishments in Southern California without prior notification using objective and detailed rating procedures.
    
Lodging inspections include at least one unannounced inspection and one overnight visit each year. Inspectors review and rate exterior, grounds and public areas, room decor, ambiance and amenities, guest room, bathrooms, housekeeping and maintenance, management and staff and guest services. Once the inspection process is complete, properties that meet all requirements receive a rating of one to five Diamonds.

Nationwide, AAA inspects more than 47,000 properties each year. Properties are rated within their own classification, such as motel, hotel, bed & breakfast, etc. There are 13 classifications, ranging from facilities that offer limited services to those offering full services. Fewer than 3 percent of the estimated 25,000 AAA-rated lodgings and less than 4 percent of the estimated 11,000 restaurants attain AAA Four Diamond status. Approximately 60 percent of all lodging facilities in the nation qualify for a one to five Diamond rating. AAA Five Diamond hotels and restaurants will be announced in November.