We have a 7 hr layover this Saturday in CDG, arriving early at 8:30 and departing at 3:30 in the afternoon. We want to head in Paris to stretch our legs, have a good meal and still make it back in time to go through immigration. What restaurants open that early? Ah, I'd love a good duck confit but if not possible, how about croque Madame somewhere central and easy to get to from CDG? Appreciate any suggestion!