I have done this multiple times and agree with everyone that says its pretty short waits during EE. One warning, though: in my experience, PP seems to be not operational during EE more than other options. Sometimes, the cast members at the rope drop would announce that fact. other times, it has broken down almost immediately as soon as people started getting on. A ride break down is a risk at any time of day, but with PP during EE, you kind of get screwed in terms of then not being be able to line up for 7DMT or something else with a typically longer wait after regular opening. Your stuck either waiting in line for PP and hoping it reopens quickly, getting in a long line for a different popular attraction, or jumping in another nearby short line (e.g., Pooh or Small World). So, I would have a plan in mind of what you want to do if PP isn't working