Registration for the LEGO Inside Tour will be opening starting tonight and will run for a few days. Starting at 10am CET/2am PST/5am EST, you can sign up through the registration page on the link above and it will be up until November 2 at the same time. It looks like LEGO has done away with the first-come, first-served system and will move to a lottery system which good and bad depending on how you look at it but it seems to be the most fair choice so everyone at least has a chance at it.
There are four tours for 2019 and they are as follows:
The tour isn’t cheap as tickets cost 14,500 DKK/~$2200 USD and the price includes 2 overnight stays with breakfast, catering, and entry ticket to LEGOLAND Billund. Travel costs and additional stays are not included so you’ll have to figure that price in the total as well. The price may seem quite high but everyone I’ve talked to who has attended in the past says it’s worth it. Upon leaving the LEGO Inside Tour, attendees also get a swag bag which includes the extremely limited exclusive Inside Tour set.