Do you offer a birthday party package? Yes we do - We invite you to celebrate with a LEGO® Birthday party at LEGOLAND® Discovery Center Westchester and you'll have a fun filled adventure to remember! Click HERE to start the fun! Related articles How can I book a birthday party package? What happens during the birthday party? Can I have more than 20 guests attend my party? What is the minimum number of children required for a birthday party? Do I have to invite 20 people?