If you stay at PPH...
At least once walk down the hallway towards the kid's movie room, and sniff. They pump in the smell of suntan lotion.
And when going to the parks, go out the *front* door, NOT the back door that the signs point you to. Go out the front, go left to the crosswalk. Go into the Grand Cal, turn left after you're in the lobby, go down the hallway, out the sliding doors to the right, and you'll soon find yourself in DTD, between Club 365 and Sephora (with the Haagen Dasz sign across the way from you). Turn right, go to bagcheck to DL.
And of course if you're going to DCA, use the GCH/DCA entrance whenever, as you are a resort guest and can use it at will!
By the way, PCH Grill is really nice for dinner. A bit chilly, and if you get the quesadilla appetizer, know that the big roasted green chili pepper in it is HOT!
Also make note of the little perks you can get; when we were there in June, I realized that almost everything offered to guests at the Grand was offered to PPH guests as well. Early Sephora thing (with gift cert purchase), early BuildaBear, tours around the Grand, etc. All on the sheet posted across from checkin!