In a Naruto and Hinata get married fanfiction, they might have a big, traditional shinobi - style wedding. All their friends from Konoha would be there, like Shikamaru, Sakura, and Kakashi. They would celebrate with lots of food and dancing.
In fanfiction, it could be for safety reasons. There might be threats or political situations in the village that make them keep their marriage a secret. For example, there could be some groups who oppose their union, and by keeping it secret, they can avoid any potential problems until they are strong enough to face them. Also, they might just want to have a simple, intimate bond without all the formalities and public attention that a normal wedding would bring.
In a fanfic of their marriage, Naruto and Hinata would face challenges too. Naruto is often very busy with his Hokage duties. But Hinata would be understanding. She would manage the household while Naruto is away. When they are together, they would probably train together to keep their ninja skills sharp. Their marriage would be a symbol of unity in the village, and they would be an inspiration for the younger generations of ninjas.
In the fanfiction, it could be that Hinata is already proficient in kenjutsu. She then teaches Naruto some of the basics. As Naruto learns, they start to have a better understanding of each other's fighting styles. This could lead to them working together more effectively in future battles and also in their relationship development.
In a fanfiction, they could be involved in a race. Naruto's speed, Sasuke's sharingan - enhanced perception, and Hinata's byakugan - aided navigation could all play a part. Maybe they start off competing against each other but then realize that there's an outside threat during the race. So they put aside their differences and work together to overcome the threat, forging a stronger bond in the process.
The fanfiction could show how their relationship deepens during the pregnancy. They could have more quiet, intimate moments together, like sitting on the porch at sunset and talking about their hopes for their child. Hinata could share her dreams of their child growing up strong and kind, like Naruto.
Well, it could be that they have a sleepover at Hinata's place. They might cook a simple meal together like ramen. And then, while sitting around, Naruto could accidentally fall asleep first. Hinata might then take a moment to watch him sleep peacefully, blushing a bit as she realizes how much she cares for him. Later, she might cover him with a blanket and quietly go to sleep herself.
They might visit the local market. Naruto would be excited about all the different foods and items, and Hinata would be happy to follow him around. They could buy some cute souvenirs or some new ninja tools for Naruto. Then they could sit at a small cafe and enjoy some tea while talking about their friends and family.
In a Naruto and Hinata date fanfiction, they could start their day by visiting the memorial stone. Naruto would tell Hinata about his friends who sacrificed themselves. Then they would take a walk in the forest, holding hands and enjoying the peaceful nature around them. Hinata might shyly give Naruto a flower she picked along the way.
There could be a scenario where Kushina comes back to life somehow in the fanfiction. She might then play matchmaker between Naruto and Hinata, using her knowledge of Naruto to help Hinata understand him better. For example, she could share stories of Naruto's childhood that would make Hinata feel closer to him.
It could also result in a change in the way the village views their relationship. Since Naruto is a hero, his saving of Hinata would be a big deal. This could lead to the village elders or the people in general being more accepting of a possible romantic relationship between them. For example, they might start to see Hinata as a more important figure in Naruto's life and give her more respect.