None of the planets listed (I may have missed something, let me know) have rain. Here on Earth Antarctica is a desert even though it is covered with water (https://en.wikipedia.org/wiki/Climate_of_Antarctica).

First time I have ever heard "zettaliter" That is a lot of water bottles.

Europa Clipper mission was launched Oct. 14, 2024 and arrives to Jupiter in April 2030. Jupyter Icy Moon Explorer (juice) was launched Apr. 14, 2023 and arrives to Jupyter in July 2031. I admire people behind these space missions - lots of work for a reward that one must wait for so many years.