A group of people taking pictures on a walkway in front of a large body of water.
A group poses on vacation at the ocean.
The group may be taking scenery pictures, not pictures of poses. The group may not be on vacation. Not all large bodies of water are oceans.
Just because a group of people taking pictures on a walkway in front of a large body of water, doesn't mean the group is on vacation.
A group of people taking a picture in front of water are not necessarily on vacation. Not all large bodies of water are oceans.