First, context: considering local events as a simple 'valuable information' for the traveler is a vision far too optimistic here in Portugal.
A summer festival or a religious celebration can turn a small quiet town into an unaffordable tourist trap for a fixed pension, making travel downright impossible.
The ability to find alternatives is often limited by mobility and budget, which is a reality in many jurisdictions, not just Senegal.
For retirees, an unanticipated event can mean not being able to afford the trip at all, not just adapting to it.