What's the biggest travel mistake or mishap you've experienced?

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I once booked a hotel through a reputable website, and when I arrived, the hotel didn't exist, despite having a booking confirmation number, photos of the hotel, and even finding it on Google Maps, etc.

What's the biggest travel mistake or mishap you've experienced?

Lost luggage, passport drama, missed flights, tried a local delicacy and immediately regretted it?

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I’ve been booking my long-haul work trips through https://travelbusinessclass.com because their agents actually hunt down better business fares than anything I’ve found on my own. The 24/7 support has bailed me out a couple of times during missed connections, so it’s been pretty stress free. If you’re trying to save on premium cabins without dealing with fine print, it’s been a solid pick for me.