It is wrong to waste your employer's money.
Alex is granted a large amount of autonomy at his job and the company will cover fairly high food costs while traveling.
Alex wants to eat a quality meal and have some drinks to recharge.
Alex spends a reasonable amount on food and drinks at a casual restaurant.
Alex orders very expensive food and drink at an expensive restaurant.
Alex is granted continued free reign on food expenses he reports.
Alex's boss notices the high charge and limits his priveleges.