Hi Chowhounders! I am a long-time lurker, first-time poster. My partner and I will be in Paris on a Sunday and Monday in May, and are hoping for some of your collective wisdom on the best places to eat on those tricky days. We love everything and anything, but I suppose we'd prefer to try a high-dining place one day/evening, and a more casual bistro another. Most places on my go-to list are, unfortunately, closed those two days. Are there any must-trys open on Sundays and Mondays? Thank you!