Hike Champagne hills, with champagne tasting!

18 km moderate. Champagne tasting.
Hike in the most prestigious wineyard, champagne tasting by an authentic familial producer, picnic along the wild Marne river!
We meet at 09:25 at Gare de L'Est, near the Starbucks
We will take the 09:49 train (name ZIMO, line P) and get off at Nanteuil-Saâcy at 10:38 (free with your zone 5 Navigo pass).
Have your lunch with you.
You will recognise mee with my blue scarf.
A small fee of 8 euros by person, including champagne tasting will be asked in cash before we leave from the train station.
We should be back at Gare de l'Est at 17:30
My number : 06 68 22 30 70. Rodolphe