我在本月29号订宿雾航空的机票，在提示一栏发现这样的字句：For Web/Online & Call Center transactions, all guests (other than those exempted from paying travel tax) departing from the Philippines to international sectors shall pay the Philippine Travel Tax amounting to Php1620 at the respective airport in the Philippines prior to departure.
想请问是否在座马尼拉--香港的航班，除了给机场税外还需给付上述的旅游费1620PHP？那加起来就是很贵的税金？请各位指教。
离境税是750Peso/人