I'm struggling with the same dilemma! We're going on our first cruise (3 nights from Port Canaveral), and the way the flight times and prices worked out, we're actually spending two nights at a Disney resort before the cruise, plus two nights after the cruise. Our plan is to spend our arrival afternoon and night at the resort, swimming and having dinner, then the next day we'll have breakfast at Chef Mickey's, go to Disney Springs, more swimming at the resort, and dinner at the Boardwalk area. When we get back from the cruise, we'll spent that day swimming and hanging out at the resort, then dinner at 1900 Park Fare, and then watching the fireworks from the GF or Poly. Our last full day, we're planning more swimming, going over to AKL to check out the savannah view points and have lunch at Saana, then back to the resort to hang out and swim, and dinner at 'Ohana.
I'm still trying to restrain myself from buying park tickets and trying to cram park time into the trip too. I'm sure we'll have plenty to do without the parks, and planning park time is probably just too much. Plus the cost for a 2 or 3 day ticket is ridiculous. But I'm having trouble fathoming being RIGHT THERE and not going to the parks, LOL. I've heard from tons of people who've done no-park trips though, and it was all positive, so I'm going to try to give it a shot!
I had the same concerns about my kids being upset about not going to the parks as well (mine are 4 and 8). I just explained to them that we could go on a
Disney Cruise and stay at the resorts, but that we wouldn't also be able to go to the parks. I made sure they understood that we would be right by the parks, and we would be able to see them, but we would NOT be able to go in, or go on the rides. They both claim to be okay with them, and as we approach our trip, I'm reinforcing the idea of a no-park trip every now and then. I guess we'll see how it works out when we're actually there.
Good luck with your decision, and have a great trip!