I believe the resort is the Grand Wailea on Maui. I was there last year for my honeymoon. We didn't stay at this resort, but we had dinner there. It is beautiful and according to my DH, lots of celebrities stay there especially sports celebrities.
Again, good for Jon and Kate and the kids, they probably would never have had this opportunity without the show. I loved Hawaii and am grateful we got to go. I know if we have 8 kids we wouldn't return without some sort of drastic increase in income.
We were there in February and the resort is not cheap!! However, it is very beautiful and would love to go back. We went with my husbands company who picked up the whole tab and I know the rooms at a corporate rate were 475.00 a night for a room with a king bed . They are very fortunate if the show paid for this trip.