The council also said that in the past other decorations like Santa hats and wreaths have been added but that this was different.

“While we don’t condone the wreaths… and Santa hats, let’s stay away from adhesives, graffiti and all things that can damage the art” it said on it’s social post.

It sounds like what they don’t want is adhesive on the thing, which I’d say is probably a legit ask.