I choose to water the plants on Saturday too.
This is not required. This is my choice. Good for the plants.
Especially in the hot temperatures nowadays.
Only the weekdays (from Monday to Friday) are required in terms of the voluntary work for the accomodation and for the food (both cold and warm, breakfast, lunch, and dinner).
So I do not pay rent for the little wood house accomodation.
I work for it.
There are multiple gardens, and multiple types of plants, including foods too, for example tomato, pear, zucchini.
I also water the various plants in front of/around my accomodation, around other accomodations, and around the kitchen too.