Our understanding is that PRT is tomorrow/Thursday morning, then Friday will be the last day of early-morning PEP. It's true that the Academy's official position is to not encourage parents to come to it, mostly (we were told by the Navy operator who took our call) because they don't have enough support at the gates that early to accommodate large groups of visitors. That being said, we deduced that we would not be denied entry… but we will be on our own to figure out where to go in hopes of seeing them run in, as described in the "Parents of USNA Midshipmen" website's description of PPW.