Why is the airport tax at some airport charged outside the airfare ticket but instead must be paid at the airport? Example from Uyuni airport
indonesian-citizens
nizhni-novgorod
vlc
turkish-citizens
tofino
venezuelan-citizens
google-maps
caribbean
pune
prg
pacific-ocean
housekeeping
jasper
riga
dual-nationality
times-square
msp
alaska-airlines
seoul
iraqi-citizens
belize
x-ray-machines
food-and-drink
passports
svo
tuva
mail
ghent
emergencies
self-guided