OK.  I misspoke.  Not chromecast, but google cast.  It says the TV and phone need ot be on the same network. That is probably asking to much. Hopefully the firestick with the VPN App loaded on it will be sufficient. I have been considering an ethernet connection for the firestick.  Wonder if you pull the ethernet from the tv, or perhaps bring a splitter with cords, if it would keep that firestick powered. Way too much thought for tv on a cruise.  Thanks for your help.