There could be some value of filling in the questionnaire beforehand, namely to make you aware of certain restrictions ahead of time. Like the fact that you sho

There could be some value of filling in the questionnaire beforehand, namely to make you aware of certain restrictions ahead of time. Like the fact that you shouldn't be a genocidal terro ... OK, there really is no justification for THAT kind of question. But, for example, I recently smuggled a packet of Spanish Jamon into a Latin American country which completely bans bringing that kind of thing in. But I only found out on the plane, and there's no way I was going to flush 400gr of prime Iberico (which on top of it was a gift) on arrival.