Check the official holiday calendar for your travel year, then decide whether to avoid peak movement days or build the itinerary around one city where you can settle in.
Move before or after the rush
The highest friction often sits at the edges of a holiday rather than in the middle. Shift long-distance travel by a day when possible.
Use one base more deeply
During busy periods, a walkable base with food and local life nearby is more valuable than trying to cover a long multi-city route.