@Lena5124
It is not possible, because you do not know if those dates will going to be part of a weekly, monthly etc. booking. To increase the price for those dates and/or to force them not to be part of weekly,monthly booking are all "if x then y" situations, which can not be programmed in a static system.
If you want to exclude certain time periods, week or months from a discount , then you must not use the section for discount percentages, but set fixed (discounted) prices for the specific weeks,months which are discounted ("custom settings" in the discount section). Leaving the not as such priced weeks., months on the normal price level.