Thanks everyone, The Rome2rio website is very helpful. I will find out how and where to purchase the bus ticket that is recommended. If that fails my husband and I will call the taxi. Nice to have a backup plan.
We are leaving from Le Pecq on Oct 3, 2019 taking the Viking River Boat to Beaches of Normandy. We have one day on October 4, free to explore. We would like to go to Versailles. We will have been in Paris for 4 nights prior to this and will purchase the Paris Museum Pass. We will get the 6 day pass which will give us admittance to the palace therefore we only need transportation from Le Pecq to the Palace of Versailles ? Thank you for any suggestions/help