This sounds like a simple question, so I'm hoping the answer is simple too. I have "approver" access in Target and have clicked around quite a bit, but can't find a way to monitor page views as it pertains to our contract for billing. (Our contract states that we are paying for ## millions/ page views per year.) In Adobe Analytics, this is available for server calls by month under "billing".
I believe it counts any pageview anywhere an mbox fires, regardless if there is an activity running or not. For the 3rd party pixel, I would check with your account rep and have them monitor the pageviews and see if an additional mbox call will count against you.