Yes it s legal. You could probably get generic M ms cheaper though.
No, you don t need permission. You may need permission to use their trademark on your menus. But for a small business, you re not likely to face any trouble.As long as you follow proper food handling and local health regulations, do as you please.
as long as you pay for the M M s - it doesn;t matter what you do with them after thatMcDonald s has several brand name candies they use with their ice cream Flurries or whatever they are called
You could use that chocolate, it will not be seen on the dessert because it is already melted.