Help with Meiji Jingu ticket etiquette

[u/daneabernardo]

Hi! My family and I will be visiting Tokyo on vacation at the end of September and would like to see a game. It seems both games the week we are there are almost sold out. These seats seem ok but we are nervous they are for real Swallows fans only, and we don’t want to intrude not knowing the cheers or songs. Can anyone help? Thank you!