wasn't always a PH, in the early travel days in the 2000s, but since kids are a little older,and we are DVC now, PH is a must
We are rope droppers, and almost always at some park well before opening. Then we ride, rush, do whatever, and usually done/leaving by 2 or 3 at the latest. Rest in room for a bit, freshen up, then often back out in the evening. Evening park often totally different from morning park Kinda depends on where we are staying. A LOT of times we end up at Epcot for eating, we're often there during a festival. We also stay at BWV often, nd so easy to just walk back to HS or Epcot for a few rides, food, no matter where we start the day.
Yeah the reservations are a big one too. While you can certainly get reservations that fit with your single park, you also sometimes cannot, even if you are there right away to make reservations. We have a WDW trip next week and one of the restaurants we really want to try was already full the day we were at its associated park. So we had to make it for the next day. We will have to make a special trip to do it, but since they require park admission to go to the restaurant, we would have been stuck if not for park hopper in terms of being able to eat there, or would have had to change around all our other plans/park reservations.
I don't love having to pay more just to park hop, but it's one of the few addons I have yet to regret getting.