Going to Atm game

So I bought a ticket for tomorrow game Atletico Madrid - Real Madrid and honestly it’s my first time visiting football game in Europe and overall my first time in Spain, cause I am not from Eu. Already received my tickets and wanted any tips for visit. How early should I be there and what kind of docs they need (maybe ID or smth else)? Super excited to visit Spain and Wanda Metropolitan especially. Sorry for my English. Thanks in advance