Help for a newbie

Hello to the community!

I'm from South America and will be spending a few days at Legoland, including staying at the (castle) hotel.

I'm a bit lost:

  1. I can’t seem to load the tickets on the app. I have a booking number, but it’s asking for an order number, and I can’t find that code. The error message says: "Your order number is located in your confirmation email under the label 'Order Number'"

  2. How does the logistics work with the hotel? Do I arrive, leave my bags in the car, and wait until check-in time? How can I make sure I don’t miss out on the attractions during that process?

Any other tips or advice are more than welcome!