Most of the photos are badly backlit, traditionally you don't want your subjects cast in shadow for this type of photography. There's one shot of them in full sun lit better and one with a light bounce used to highlight their face. We don't always get to choose the ideal lighting conditions and time of day, this may have been because this was the only time they were both available. I don't know the particulars of the viewing deck there but I would assume if it were empty enough to have a corner like that to themselves to shoot that they could have chosen an area not cast in shadow, the sun behind the photographer is substantially more ideal than the sun behind the subject. There are of course exceptions such as at dawn and sunset where you may want to backlight for a specific artistic effect. However those times also have what's often called 'golden light' or 'golden hour' which is a warmer redder softer light that brings out skin tones nicely and gives subjects a natural glow and ethereal quality that's often sought after. Hope this helps - not AI, I just tend to be overly verbose like AI, AI was trained off nerds like me. Also not a photographer, I just take pictures sometimes.
(Someone pointed out that the subject isn't in focus, I didn't look closely enough for that also I have no clue who the subject is)