A:AnswerYes he will however, he (or you) would need to ensure his console at home is connected to the internet and remote play is enabled on the home console. As long as the console at home is in rest mode (not fully powered off), he will be able to connect to it via the Portal provided there is WiFi wherever he is visiting.
A:AnswerYes, IF you left your PS5 on sleep you can turn it on through the portal. Keep in mind Sony doesn't recommend playing the Portal outside of the home although it is confirmed to work, but it requires a very strong internet at your location and a very fast UPLOAD from your home. Many home internet providers do not provide fast upload speeds. I have 500MBS service at my house but typically only get 6Mbs - 9Mbs Upload speeds, which is enough, but barely, sometimes its choppy and laggy outside of my home for that reason.
