The lines are a bit confusing. There's one that starts by the pastries. Another that starts by the large chocolate fountain. And a third line that starts in front of the crepe making. I think things would move much faster if there was only one line. Expect a 30 minute wait to order and another 10 minutes to get a crepe.
Otherwise, everything tastes authentic here (I studied at the Sorbonne). A true Parisienne patisserie serving delicious crepes, croissants, and macarons. Yes, it's a bit expensive, but cheaper than traveling to Paris.