1. Transportation, lodging, meals and other related expenditures which may lawfully be incurred by officers and employees of the city when approved by the mayor and the city council, as applicable, within or without the city, for purposes which generally promote, develop or publicize the city’s best interests, including sales promotions and institutional activities of its municipal utilities;

2. The costs of meals lawfully incurred on behalf of or by city personnel within the city or at other normal areas of employment while they are conferring, counseling or otherwise meeting with noncity specialists, technicians, executives or others for purposes generally associated with the routine official duties of such personnel where not otherwise covered by other provisions in this section.