We've stayed there many times over the last 20 years and just love the place. We've never used our points. They have wonderful food in the restaurants.. be sure to try the buffets. The rooms in the wings are bigger and nicer than the ones in the older main building.
Asheville is a very neat city with some great places to explore downtown. There are wonderful little places to eat there, too. The Biltmore House is always interesting.
As far as time of year, we've been there almost every month of the year. Spring and fall are just beautiful in the mountains. Easter would be an excellent choice. I would book it asap.