If you do not have a commercial establishment or if you want to offer goods for sale, services or entertainment activities as a showman or showman-type business outside of this, then you must apply for a permit (traveling trade license).
If you want to run a catering business that serves alcohol, you generally need a permit.
Entrepreneurs operating a traveling business must apply for a VAT booklet from the relevant authority before commencing operations.
If you suspect illegal work, you can report it to the relevant authority.
