Half right, half overestimated: the influence of local events is undeniable, but reducing it to a systematically determining factor ignores nuances.
It is a valid concern to study the impact of an event, but one must also consider the nature of the traveler and the specificity of the event.
Here, a large turnout for the Dakar Biennale can make accommodation unavailable if not planned well.
However, a small neighborhood cultural event, charming as it may be, will not always dictate a traveler's decision, especially if their flexibility is high.