Before any conviction about the impact of local events, one must question the condition that protects us from failure.
Asserting that these events drastically affect every traveler ignores the flexibility or available alternatives.
For example, if one is willing to stay in a neighboring city and make a short trip, the impact of a major festival on prices and availability in the heart of the action becomes minimal.
The fail-safe often lies in proactively seeking workaround solutions, which mitigates the scope of these apparent downsides.