Mercenaire's shirt is drenched with sweat when he takes a drink before setting up shop, but is dry when customers begin to arrive.
In the film one kilogram (1 kg or 2.2 lb) of bread is shown in multiple instances to be equivalent to one (French) baguette. This is a massive over representation of the weight of a baguette, which in reality is typically around 0.25 kg (or approx. 0.5 lb).