Give some serious thought to how much mobile data you might use. He has to keep up with the latest advances in computer technology and trends, and has spent over 30 years in his line of work traveling extensively. Connecting your Chromecast through the hotel is going to be a pain or require special hardware — keep reading if you want to learn all the rest of the details. The second problem is the issue of authentication splash screens wherein you can log into the Wi-Fi freely but you need to first stop off at a splash page and accept terms of service, plug in your room number, or otherwise authenticate yourself as a valid user of the Wi-Fi system. Is there much of a drop off as it effectively relays the signal?
Sometimes when your Chromecast is connected to your Connectify Hotspot on your laptop, it will not easily let you adjust its settings from the same laptop.
Using your Chromecast in a hotel room