You still have until May 22nd to sign up for side events, and a Spectator pass is good for that. Since everyone is signing up, maybe enter Cyberbots too?
Register for Combo Breaker proper for access to the side events:
https://www.start.gg/tournament/combo-breaker-2024/details
Go to the All in Together page for side events:
https://www.start.gg/tournament/all-in-together-2024-combo-breaker-community-tournaments/details