There are 2 ways to set different prices for special periods like Christmas and Easter:
  1. You can use Recurring block-offs in car management to block off a specific car for that period, copy the car, and block off the other period of the year. This way you will have 1 car available with different prices for your selected periods. You can read more about Block-offs here: https://booking.drivenot.com/en/knowledge-base/98-how-to-block-availability-of-a-car-on-a-certain-date
  2. You can use Tariffs and create a special tariff for that price increase, then assign the tariff to your selected Cars. You can read more about using Tariffs here: https://booking.drivenot.com/en/documentation/46-tariffs