We purchase a Disney Vacation Package thru Disney Travel & originally had 6 day parkhoppers. We had decided prior to our trip to upgrade to AP's. I upgraded my hopper to the Premium AP & paid the difference. I got the premium to take full advantage of the discounts. (DL Hotel, 15% food in the parks/hotels & 10% on merchandise + free parking) My hubby got the deluxe (disc. not as good).
We used these the entire trip & got FP's just the same as you would with a parkhopper.
I'd say upgrade especially if you plan on eating & shopping in the parks!!!!