The reading lights are hard to read by; are they adjustable?

It depends on which lights you have. Older Travatos had lights with a physical on/off switch and white LEDs. Those tilt and swivel a bit.

Newer Travatos have reading lights that have two levels. Initially the light works as a blue mood light but if you press and hold the on/off button it will turn to a brighter white light which is great for reading.