It's hard to say. Maybe the author drew inspiration from real-life events, but it might also be completely fictional. We don't have enough details to be certain.
Well, it could be a really heartwarming experience. Maybe it was a trip to a beautiful beach. The father and daughter might have spent days building sandcastles, walking along the shore, and sharing ice creams. It's a time for them to strengthen their bond and create memories that will last a lifetime.
One possible destination could be Paris. The father and daughter can stroll along the Seine, visit the Eiffel Tower, and enjoy French pastries at a local café. It's a very romantic and cultural destination.