Who can open a temporary bar?
The service-public.fr page on association bars is clear: an association can open a temporary bar “in certain circumstances only”. The most common setting is an event it organises itself: a fête, fundraiser, meal, show or tournament.
In that case the authorisation comes from the mayor and limits the offer to group 1 and 3 drinks. The cap is five authorisations a year for one association. Does a two-day event need two authorisations? The page does not say: ask the town hall when you draw up your annual calendar.
Temporary drinks outlets do not need a licence: the licences page states that the town hall's authorisation is enough. The operating permit, which requires training of at least 20 hours over at least 3 days, applies to on-site sales in a permanent establishment.