Questions regarding ordained Theravada monks dealing with modern life, travel etc

So I was reading some stories from the Bhikku who created https://americanmonk.org/ Specifically about his ordination(s) and he mentioned how he travelled from A to B to C country after X, Y or Z circumstances happened, but mentioning it in a rather nonchalant way like any general tourist. Like he had an abundant of wealth to spend freely to travel whimsically. So it makes me think and want to inquire how do modern monks manage to travel so freely when all they own (supposed to own) is a bowl and 1 or 3 robes. A monk is supposed to give up all possessions before ordination. So what about their passport. Sure finances they could give to a trusted loved one but isn't that cheating. Like a kind of "hold my material possessions until after I ordain then give me them back" cheating...lying essentially! especially with a passport where legally nobody but the passport holder or governmental body are able to legally "own" the passport. Sure I understand that a monk can have a personal benefactor like a loved one who supports them financially, though in the story I vaguely explained above the Bhikku was dealing with having visa issues after being ordained in a different country, which implies he still owns a passport, then travelling so freely, implying finances etc are there. Even logically how can a Bhikkhu even buy a plane ticket or "own" a plane ticket (without the help of a lay person doing it for them) I am not trying to be pedantic, I am genuinely curious how this stuff works. Especially when looking at the strictness and limitations of requirements of a person just to ordain in the first place, for then the strictness to be relaxed instantly and do a 180 as a Bhikkhu can then use a passport that he owned before ordination, or money, or even a pair of seeing eye glasses (medicine requisite but still a possession one would have and I assume need to give up before ordination) Which adds another question, on a more practical level. If one took ordination say in sri lanka (any country) then the visa expires (visa is a possession too) Bhikkhu has no money, is to be deported, no financial benefactors....how does that even function from a modern world perspective. Any ordianed or past ordianed members experience would be greatly appreciated. I obviously understand that benefactors from the laity, not even the Bhikkus family/friends etc can and do support the Bhikku. I assume this is also how and why teacher monks are able to go back and forth multiple times a year to different monasteries and countries teaching the dhamma, after being requested.