PPW - Definitely
Should they come to PPW or to I-day if they had to make a choice.
As mentioned, above, PPW is a time for you to release and get away from the same folks you've been with all summer. Also, because lots of parents will be there, you'll kinda feel left out if yours cannot.
Recognize that the plebe may wish only to hang out in the hotel room, nap and play with computer/video. The parents should be ready to let the Mid drive the activities.
We were fortunate that we arrived for PPW on Thursday afternoon and were able to watch DDs varsity sports practice (Diving).
I-Day is very brief and scripted. Say your goodbyes at home.