In Fate/GO, summons are often related to the story in several ways. For example, the Servants are characters from different historical and mythological stories. Their abilities, personalities, and even their Noble Phantasms are designed based on their original tales. So when you summon a Servant like King Arthur, you get a character whose stats and skills are reflective of the Arthurian legends.
We can expect Servants with unique abilities that match their story origins. For example, a Servant known for their archery skills in their story might have a powerful ranged attack in the game.
The story length of Fate/GO can vary depending on how much content you explore. But generally, it's quite extensive and can keep you engaged for a considerable amount of time.
The story length of Fate/GO can vary depending on how much content you engage with. But generally, it's quite extensive and offers hours of gameplay and narrative.
The first summon is related as it is often integrated into the opening narrative. It can be a key part of introducing the concept of summoning servants in the context of the story.
In Fate/GO, to skip the story, usually there is a skip button on the screen during the story segments. Just click it if you want to skip. To read the story, simply don't click the skip button and follow along as the text appears on the screen.
Personally, I think it's better to read the story at least once. The story in Fate/GO is an integral part of the game. It provides a lot of context for the characters you encounter, the battles you fight, and the events that take place. Skipping it means you might miss out on some interesting plot twists and character development. However, if you're a veteran player and have read the story multiple times, skipping might be a more efficient option for you when you're just farming or doing repetitive tasks.
In Fate/GO, the game does offer opportunities to change the story in a limited way. You as the Master have the ability to form different teams of Servants, and depending on how well these Servants perform in battles and the relationships you build between them, it can result in different story developments. Also, the game often has special events where your actions can lead to unique story branches that differ from the standard story line.