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
flr
tromso
us-citizens
astrakhan
hong-kong-citizens
driving
afghanistan
yerevan
family
skiing
shkoder
blr
tsa-precheck
andorra
belgrade
falkland-islands
rabat
pvg
buenos-aires
kbv
inner-mongolia
haitian-citizens
reviews
finnish-citizens
uk-citizens
gold-coast
cleaning
saudi-arabia
factoids
birdwatching