Tomorrow being the official birthday of the Queen pomp and pageantry is the order of the day. The trooping of the colour and the firing of guns is how she celebrates. Beats party hats and poppers.
If you want to witness the event, the parade leaves Buckingham Palace around 10:00 am and travels to the Horse Guards. The troops wait for the Queen to arrive and inspect them at exactly 11:00am . This is followed by a 41 gun salute in Green Park and then a 62 gun salute from the Tower of London.