La Cigale is a very small (1400 person), exclusive hall in an upscale neighborhood. If Fally's team hires a good security team and bouncers he can make it happen.
The flip side is that once the venue administrators hear that there is strong possibility of unemployed buffoons dressed in military attire showing up early, threating to beat attendees approaching the doors.. they'll drop the concert with the quickeness and replace him with a French rapper as usual.
These idiots are already sending messeges about extracting revenge for Babin