May be you should just have mentioned Tunis, Hammamet and Djerba or other cities! Why?? They are modern, open minded, nice wheather and nice people! And how you advertise it is just putting some beautiful photos which characterize the cities on catalogues and the big flag of Tunisia as the cover letter and everything should be in red to attrackt people:-))))) You should have mentioned advertising on TV and through radio stations and in aviation magazines which will be read during flights or via Internet....and bla bla bla bla!!!!!
the most important thing is that they dont want to hear the perfect answers, they want to see how you behave and if you complement the group well!!!!