Amusement arcades involving gambling are part of the seaside resort experience, and should IMHO▸ be permitted but not advertised.
Not always a pleasant part!
I agree, and I would therefore prohibit the advertising of such facilities. I would also use the planning system to discourage excessive provision of amusement arcades, betting shops and similar facilities.
A pre-existing amusement arcade or betting shop within a reasonable distance, should
IMO▸ be a reason to oppose the granting of planning consent for additional similar facilities.