When should I arrive? 12 July 2022 12:17 Please arrive within the half hour entry time you selected when you booked, as stated on your ticket. Related articles I am running late for my entrance slot, what do I do? How do I get to Windsor Great Park Illuminated? How long does it take to complete the trail? If I have booked an entry slot how long can I stay for? Do I need to purchase a car parking ticket?