Can I bring my Reason ONE alarm clock along on my camping trip and use the Alexa voice assistant if I power it using a portable power bank and keep it connected to the Web using my phone's Wi-Fi hotspot?

Yes, this usage is supported. Two prerequisites:

• 1) Your phone has an adequate plan with your 4G LTE service carrier to act as a Wi-Fi hotspot.
• 2) There's 4G LTE coverage where you're traveling.

One suggestion: It'd be a good idea to set up the clock with your phone at a location where the 4G LTE signal is strong and the environment is safe.