Check With IT
If you use your Galaxy A for work you should check in with your IT team (if you have one) before you install Android Pie.
Enterprise problems almost always popup after Samsung releases a major Android update and we've seen a bunch of complaints about Pie.
Checking in with your company's IT department could provide you with essential feedback about Android Pie and the apps and services you rely on to do your job.
If you don't have an IT department you might want to check in with your co-workers who're using Android Pie and get their feedback before moving your phone to the new firmware.