The Kingdom's towns and villages hold their own celebrations, with the local friendly wizards providing the fireworks (though the local friendly witches are not allowed to provide apples or anything that formed part of the house that enticed Hansel and Gretel. Memories and grudges last a long time in the magical world).
The Queen holds a huge party for her staff and Council. FNN are allowed to film the royal fireworks display and accompanying concert. Naturally the royal fireworks are bigger and better than anyone else's.