Wizards are renowned for their fireworks and Roxannadrell expects the very best wizards to save their best work here for celebrations at and around the Palace (usually for her birthday which is a public holiday).
Food and drink is prepared with copious amounts of magic (though at least the advantage of that is never having to worry about running out of supplies).
And those dallying behind in the Palace grounds, which the Queen opens up for the public to come and join her private party, discover magic can be used very imaginatively indeed to get them to go home!