Its an absolutely great experience. Go to the office as much as you can, it makes the experience a lot better when you get to meet people in person in the office, whether its at the snack drawer, coffee machine, or if you try to schedule coffee runs or lunches with people in the office. Being around people gave me a much better experience.
Also, take initiative and ask people to be able to shadow them, email people you've met and see if they'll let you sit in on any of their meetings with their teams or clients, or if you can watch someone doing workpapers. Most people won't mind and will send you a bunch of invites for meetings, or they will reach out to other people who may have things for you to shadow.