I haven't found Roku Guest Mode to work perfectly. It does work, but I've searched and searched and cannot find out how to add streaming apps to the Guest Mode home screen. There are a few preloaded apps but I get a "failed" message every time I try to add another streaming app as if I were a guest.
I'm trying to find another solution because I don't think it's acceptable for a guest to only have access to 4 preloaded apps which they may or may not have an account with. If they don't have an account with Netflix or the other few apps then they can't watch TV.
Option 3: create a new Roku account for the guest TV. Add free apps to the home screen, so the TV setup would be similar to a hotel. Maybe also add some of the more common paid apps, which they'd have to sign into and out of on their own.