I love France, have been there several times, and always find something more to love about it. I hope you manage to get back and do the bike thing at Versailles, the grounds are so big it's really the only way to see everything, the outbuildings and gardens etc.
In that you are absolutely right, walking took me practically a whole day, just in the gardens, I ended up exhausted and did not see everything.
Thank you very much, I also hope to return soon ✌️