Well, without further knowledge, it's difficult to say precisely. However, if it's based on a true story about Palm Royale, it might be about the daily lives of the people who live or lived there. It could explore the social, cultural, or economic aspects of the place. Maybe it's about a community coming together to overcome a challenge, or it could be about an individual's journey within the context of Palm Royale, all based on real - life events that took place in that area.
It could be a business - related story. Maybe Palm Royale was a place where a new business was started and had to face various difficulties and competition in the real world.
Since I don't know exactly what 'Palm Royale Based on a True Story' entails, if it's a fictionalized account of real - life events in a specific location, then 'Midnight in the Garden of Good and Evil' might be a bit similar. It's set in Savannah and is based on a true crime story. Also, 'In Cold Blood' by Truman Capote is based on a real - life murder case. These works, like your 'Palm Royale' one (presumably), take real events and turn them into engaging stories.
Well, without more specific details about this 'Palm Royale based on true story', it's hard to say a lot. It could be a place, like a hotel or a community. Maybe it was the setting for some real - life events that were interesting enough to be made into a story.
I'm not sure specifically as there could be many novels with 'palm royale' in the title. It might be about events that occur in a place named Palm Royale.