I would have to agree with what others have said in that in the first place, it is inappropriate for the wife to have come to the dinner. When going to dinners or lunches there should be a professional or business related aspect to the meal. As my father is a physician I would say these regulations are not too restrictive in the slightest. Physicians need to offer what they think is the best medication for their patients, gifts do not offer anything to the people being treated. Meals offer an opportunity for representatives and physicians to discuss with the meal being a courtesy nothing more. Both sides of the party need to act responsibly, the doctor is responsible to get the best information to serve patients, not to get free stuff, and the other party must act appropriately.