Lacking process: The impact of local events cannot be considered a major component without clear governance and formal documentation.
Who is responsible for evaluating the relevance of this impact for each specific project?
We need a RACI for this type of decision, otherwise it is anarchy, and the risk of failure is too high.
For example, for a corporate seminar, a relevant local event like a trade show is a key factor, while a music festival is an avoidance factor.