Is there one? Wanting to pass time from night to day, cause day is prettier to adventure in.

Having an option to sleep until morning or midnight before camp or at an inn will be great.

No specifically, but you can rest repeatedly which achieves the same thing, if you're looking to upgrade the stronghold more swiftly and you already have resources. Also fast travelling between already discovered locations that are a long distance apart uses up a ton of time.

An idle rest option will be good to have. It doesn't have to heal, but just to be able to wait in a place until a desired time.