So I recently started playing P3:FES to get myself pumped up for P3P. 
I´m really digging it with the Social Link stuff being the most fun for me.
Also if someone has some tips for me on how to spend the time the most efficient be my guest since I have no idea when I should go to Tatarus and when I should do stuff like studying, going to the arcade etc. But yeah P3P is already preordered and I´m hoping that I get P3:FES done first so that I can play with the Female MC and have some experience when it comes to how to spend the time.