Saudi Arabia and Bahrain

Everything in Saudi is a challenge

Book anything, they will just cancel 10 minutes before it's supposed to happen.

Visit any tourist attractions, they'll most likely just be closed even if it's a lone rock in a desert. Most sites aren't really real and haven't been built yet.

Be adventurous, someone will tell you off. You're not even allowed to walk anti-clockwise around a building.

Expect to get around via taxi, they will just drop you wherever they want if they even come to pick you up in the first place.

Rely on your hotels even being real. Most exist just to route you to a much more expensive one that's the only choice in the area, ie Al Ula

Rely on information from Google Maps, most data like opening hours/days or links are just broken or lies.

Eat the food, it's disgusting unflavored slop.

Take the trains, the windows are completely frosted so you're basically in a submarine

Hike in the desert, it's super easy to get lost even if you can read the stars.

Even go. The Visa alone was $250.