Am I Better off riding the bus or walking to early classes?

I’m taking Intro to Animal Science and that class is at 7:25 in the morning. When I was googling the rts bus route to take from my new apartment I noticed that it said the first buses run at 7. I Live in walking distance to campusand if I were to walk it would probably take 20 minutes to walk to class. I’m just worried about the bus because I know from personal experience how bogus their times can be and that while the bus tracker app may say the bus is 5 mins away it can actually take 20 to get there. Did anyone else who took this class have issues getting to class on time riding the bus? I don’t plan to be the person who leaves the apartment 10 minutes before class starts lol, I give myself plenty of time. I’m just curious.