My son called the listed medical center to schedule his DoDMERB exam and was told he could walk-in any time between 7am and 7pm M-F. The center he was referred to is in another state (not super far, but over state line) and since he's under 18, I will need to go with him. I need to take the day off work plus pull him from school so I want to be sure he got this right. Is that normal for them to do this as a walk-in appt?