This is one of those cases where I am glad I don't have my soundbar connected to the internet...
At least with my Samsung soundbar, the remote can change the volume, the subwoofer volume and change between modes (standard, surround, game). But if I want to enable night mode, I have to use the SmartThings app. There's no way to enable it using the remote. What's worse, the app often hangs when connecting to the soundbar, requiring me to force stop and restart it. So sometimes toggling a feature that should be a single button on the remote takes me over a minute.
Samsung is right next to HP on my list of brands I will never ever buy in my entire life.