Visiting the Campus as Alumnus

Hello Junta, I’m an alum from batch 2013-2018. I’m visiting the city after 5 years and can’t shake the urge to visit my beloved campus again. I read that I can show my Alumni card at the gate to visit the campus. I also want to show my wife the campus, do I need to get her gate pass in advance or can it be issued on the spot after I make her entry?

Thanks for the help!