1. Examples of special fares are excursion fares, advance purchase, insentive, affinity and non-affinity group fares, individual and group inclusive tour fares, youth, family, military, pilgrim, local resident, student and teacher fares, etc, aren't they? 2/ Are the most widely available of these special fares excursion fares, which aregenerally only restricted with respect to their validity in time? 3/ What may be quoted on a given route?4/ Should it always be designed to fill otherwise empty or full seats on say low density days or hours in the day, where the scheduled flight needs a boost?5/ Why must one be able to determine the objective and properly estimate the results?**********************************1/ There are no formal carrier mechanisms for negotiating non-scheduled tariffs, prices generally being proposed by individual carriers for government approval, aren't there? 2/ Do international associations of non-scheduled carriers play a role in influencing government policy regarding non-scheduled tariffs?3/ Do international or local associations of non-scheduled carriers play a role in influencing government policy regarding non-scheduled tariffs?4/ What organizations are engaged in monitoring tariff developments and in coordinating government tariff policies.5/ What carriers play a role in influencing government policy regarding non-scheduled tariffs?