I will add one tip about security: Never leave your bike assembled in a hotel room. Always remove at least the front, and preferably both wheels.

Why? The easiest thing about bike theft is that once you've freed the bike, you can ride away into the sunset. Removing one or both wheels makes this problematic, unless the thief also happens to be a bike person. Even if the thief has to remount the wheels, it takes time, and might be just enough to make it not worth their while, because they won't be wheeling it away as is.

This is something I also recommend to students - lock your bike outside, take the front wheel with you to class. Harder to ride away this way.