That's definately enough time. We go to WDW 2X per year and stay 6n/5d because the tickets are buy 2 get 3 free = 5 day park passes. We take our time and spread out the "park time" bacause with FOTL, you can be done in 2 days. So we take our time and spend half the day in the parks and the other half enjoying the hotel. All the on site hotels are just beautiful and you will want to take advantage of the relaxation they have to offer.