If the only thing you want to do is turn Instagram Maps location sharing off, here’s Instagram’s instructions on how to make sure the feature is disabled within the app (on both Android and iOS): Tap Messages in the top right of Feed. Tap Map at the top of your inbox. Tap Update at the bottom to save your changes.

Instagram rolled out a new Map feature that lets users see their friends' locations in real time. Here's why privacy experts are concerned.

No, not exactly. Instagram doesn't automatically turn on location services, which means the Maps feature is not turned on by default either. When you installed the Instagram app, you were asked whether you wanted to grant it location permissions. You could choose to deny it, allow it only while using the app or allow it once.