Can guests download from the gallery?

Yes, if the host of the gallery has enabled this in their settings, guests will see a little download icon appear in the corner of each photo. This will download the full-resolution version of the photo/video, not the thumbnail view you are viewing in the gallery (this is compressed for a faster viewing experience).

If this feature appears disabled then hosts can activate it by logging into their host dashboard and heading to "Set Up + Settings' to toggle this feature on.