You Don't Need to Install Oreo Right Away
If the Galaxy S7 Android Oreo update is anything like the Galaxy S8's, you'll be tempted to install it right when it arrives for your device.
For some of you, particularly power users and those dealing with unfixable Nougat problems, that'll be fine. However, some of you will be better off waiting a few hours or a few days before switch from Nougat to Oreo.
There are plenty of reasons to avoid installing new Android software on day one. New updates can wreck havoc on performance and you should never install new operating systems while traveling. The last thing you want is for the software to break important apps and services while you're away from home base.
If you need to, dig into early Android Oreo feedback from Galaxy S7 users. This feedback will help you get familiar with potential benefits and problems.