I would imagine the only thing anyone would care about would be who's beer is being served and do they and you who's serving it have the proper licenses. How you keep it cold and how you get it to the glass is of no significance.
If you are asking about serving home brew, the costs of a license will eat up a good piece of the profit pie.
As Murphy pointed out, this legal advice is worth exactly what you paid for it!
Health dept would very much disagree with you! They are the place to start then your local alcohol authority to see if they tack on any extra regulations!
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