Can You Bring and Use Roku Onboard?

My young adult son was wondering if he could bring his small Roku device and use it on his stateroom TV. He has the Voom & Stream package so he'd be able to connect to WiFi. I just don't know if RC will allow this and if they do allow, can he set up on his TV? I told him to just enjoy the cruise without watching the television, but he wants to watch his shows while relaxing before bed. Has anybody done this before? We will be on the Harmony of the Seas.

HOW TO USE ROKU/AMAZON PRIME ON ROYAL CARIBBEAN We were on Harmony of the Seas in early February 2020. We used Roku and Amazon Prime on the cabin tv. Here's what you'll need. First, you need onboard wifi. We bought a wifi package for one device (my cell phone). Second, you need a universal tv remote. I bought one for $7 at Dollar General. Third, you'll need to install the Roku app on your phone. Here's what to do. First, you need to pair the universal remote to the tv. The instruc