This depends entirely on our travel logistics. If a larger journey with possible overnight stays has to be organized, a lead time of several weeks is necessary. Otherwise, it can also be at short notice to "last minute". We are flexible enough for that. In any case you should contact us. We will always find a solution together, even if it is tight!
In the other direction, there is no maximum lead time. You can gladly book the band for next year or the year after.