A. If you're a non-smoker and are visiting a restaurant with a smoking section, don't just ask for "non-smoking," asked to be seated as far away from anyone smoking as possible. (In far too many restaurants, "non-smoking" tables are be right next to "smoking" tables or sections.)
B. Find the restaurants that the locals (or fellow FT'ers) are going to, which may not be the ones in the guidebooks or recommended by the Concierge.