In the Features section of the manager portal there are tick boxes for several facilities. Rather that having the facilities dates in the Terms and Conditions it would be good to have a box next to each facility in the Features section where you can enter the dates during which it is available.

It would be good to have the option of adding an other box so as to add another date range as well as having a pre-set tick box next to it so you can simply tick "available entire opening period" (of the campsite) if applicable.