I finish at 8:20 pm I want to practice my Portuguese(Brazilian) and why not my Spanish I will be able to make it for 9:00pm . Is that worth it for me to come ?

Hi Kevin, I'd say it's worth it, people usually stay for around 4 to 5 hours, so you're in time. If it's your first time it's good to be early, but no biggie if you arrive a little later.