But trying to “smuggle” encrypted whatever greatly increases the risk, as even written there - so don’t do it - that was my point, because YOU HAVE TO LIE, which makes “attack surface” bigger. Remember the concept - keep it minimal? Find another way to have it on your destination,
When you go online - say goodbye to your privacy, that’s why you have to use Qubes and dispVM (meaning not to bring online anything with you). Same is for real life. When you go out of your home, don’t bring your privacy with you (on a laptop or on a cell phone, among other things) otherwise say goodbye to it.
Once arrived, I 'd ask my sister at home to send me key file over secure channel.