I feel like event stories go into detail about a newsworthy story rather than covering the main points within the event. When taking minutes at a meeting, you will jot down the important topics that were discussed, but they do not go into much detail about what was said. Event coverage however, focuses on a specific section from the event and gives as much information to the reader as possible.
In most of these stories, getting quotes from other people was as much outside reporting that needed to be done. Really, all that needed to be done was to attend the event and talk to others who were there also and get their opinions on the event.
These stories came across as news stories to me, probably because they all covered newsworthy events. They focus heavily on certain information throughout the story which makes me think of feature stories, but the topics are what bring them back to being news stories.