A quick roadside grab, BYOP. There is security nearby so stealth required, best to approach from service road, not the main road. Parking on the service road will also shield you from the security muggle.
From Wikipedia:-
According to folklore, in 1670, in Cologne, Germany, the choirmaster at Cologne Cathedral, wishing to remedy the noise caused by children in his church during the Living Crèche tradition of Christmas Eve, asked a local candy maker for some "sugar sticks" for them. In order to justify the practice of giving candy to children during worship services, he asked the candy maker to add a crook to the top of each stick, which would help children remember the shepherds who visited the infant Jesus. In addition, he used the white colour of the converted sticks to teach children about the Christian belief in the sinless life of Jesus. From Germany, candy canes spread to other parts of Europe, where they were handed out during plays reenacting the Nativity. As such, according to this legend, the candy cane became associated with Christmastide.
The earliest verifiable reference to stick candy is a record of the 1837 Exhibition of the Massachusetts Charitable Mechanic Association, where confections were judged competitively. A recipe for straight peppermint candy sticks, white with coloured stripes, was published in 1844. The "candy cane" is found in literature in 1866, though no description of color or flavor was provided. Its earliest known association with Christmas was in 1874, and by 1882 canes were being hung on Christmas trees.