As far as I remember from my correspondence with Penn State, they don't have a standard visit day but individualise meetings for each student with faculty and current students once you write to them about your interests etc.
Sure, received an email about two hours ago. Living stipend is about 25k for 5 years with TA/RA duties in years 2-5, additional summer fellowship of 7K for upto fourth summer conditional on satisfactory coursework/TA or RA work.