I don't think so. The Padre Hotel has a long history, and over the years, numerous people have had these strange experiences. It's not like the hotel is using these stories as a marketing gimmick from the start. The stories have emerged organically as people have shared their encounters with the unexplained. For example, the staff who have to work there regularly are not likely to be part of some made - up story for tourism purposes. They have reported seeing and feeling things that are hard to explain, like sudden drops in temperature or objects moving on their own.
The name 'Padre Drillin' isn't widely known in the common World War II stories that I'm familiar with. It could be a local or specific unit - related story. Maybe he was part of a special mission or played a key role in a certain battle. Without more context, it's hard to tell the exact story. However, padres in general during WWII were important for the morale of the soldiers. They held religious services, comforted the wounded, and sometimes even joined in the fighting when necessary to protect the men they were serving.
In some 'usopp fanfiction', he might be the key to solving a mystery on the ship. Maybe there are strange occurrences that only his unique perspective and skills can figure out. This could involve his talent for creating gadgets and his sharp observational skills, which are often overlooked by others but prove crucial in these fictional scenarios.
One common theme is empowerment. Since Usopp is often seen as a bit of an underdog, in female Usopp fanfiction, she is often empowered to be a strong and capable character. Another theme is friendship. Just like in the original story, the female Usopp forms strong bonds with her crewmates. Self - discovery is also a theme. She may discover her own abilities and what she truly wants in life through her adventures.
One popular Usopp fanfic might be those that focus on his growth as an inventor. For example, stories where he creates new and amazing gadgets for the Straw Hat crew. Another could be fanfics that explore his relationship with other crew members in more depth, like his friendship with Luffy and how they support each other during tough times.
I recommend One Piece: The Great God Usopp to you. This book is a story about Usopp. It tells the story of how he obtained the League of Legends system through an accidental transmigration and became invincible. If you want to read a One Piece Doujinshi novel with a deceptive cloth as the main character, this book is perfect for you. I hope you will like my recommendation.