I'm hoping to visit Paris in late September for 2 nights; I don't have a huge budget so planning on picnic lunches and a couple of memorable dinners. Chez L'Ami Jean looks *amazing*, but how far in advance will I need to reserve for a saturday night? My French isn't great so I was thinking about asking the concierge to do it for us on arrival. Also, when do people usually eat dinner - we tend to eat slightly later (8-9pm) but on a recent trip to Antwerp found that most places tended to be shut by 10! It may seem slightly silly, but I'm slightly intimidated by Paris (and I'm a Londoner) and I really don't want to have a disappointing trip!