The canteen is a problem for a very long time to say that 20 years ago, company never think to expand to a larger for employees, TNT have about 230 people TNS about 300 peoples
just numbers can tell with the quantity employees of seats in the canteen is not enough and all manager know.
I believe that if a company has a canteen management and food quality, good hygiene is the employee would not have to eat in the worker room, office, or by around the outside/inside
factory
Please accept and understand the problems of the canteen is too small it's time for the company to manage it.
However, your question in each item is not a lot of problems but all managers still the company expanded canteen to employees.
these problems can be solved and regulation to the strong. If the company can’t expand canteen for employees, you should explain to all thai manager by yourself.