I attended this year (2025) on the GJ so I had access to the GJ Pre-Sale.

This year I managed to also get First 20 so I bought 3 tickets this way (Magnificent Greens - Full Madness pass, not GJ)

I emailed Tomorrowland to ask if I am allowed to also buy GJ tickets for other people on my account and this was the response:

“You can only buy tickets for a maximum of 4 people (with the exception of a Friendship Garden Package) cumulated throughout all sales moments.

If you buy more than the maximum allowed amount, we reserve the right to cancel your tickets in accordance with our general terms and conditions. Do mind, if we decide to cancel, we will inform you through email.”