That's a great tip [MENTION=649038]Biggie[/MENTION]Fries - I may just investigate this walk today!
Data point - we took an Uber into Chantilly last night for dinner (approx 8 euro each way) and at at Bouchon Gourmond which has a lovely back garden with outdoor seating and food was delicious. Two burgers (house specialty) and 3 glasses of really good wine for 59euros. Tonight we might try the Italian restaurant which was down the block from that which also looked good and even cheaper prices. Will report back!