The resort is extremelly nice. I took a timeshare tour of it and it is Marriott class accomodations(if not better). The Sandestin resort is large with some of the best golf in the area. There are lots of walking trails and bicycle trails reminiscent of Hilton Head. There is a restaurant bar complex called the Village of Baytown Wharf on the property which is packed in the summer although I don't know what the rest of the year is like. There is a free shuttle that will take you all over the resort, or if you have a car you can drive. The beaches in the Destin area have sugar white sand and are as pretty as any beach I have seen anywhere. There are plenty of great seafood restaurants in the area and at the resort. The beach is across the highway (probably 1/2 to 3/4 mile) from your resort since your resort is located on the bay side (beautiful views of the bay from Intrawest). You can take the free shuttle to the beach or of course drive.
If you search through the Sandestin website
http://www.sandestin.com/ you will get a good idea of what is available.
If you are going in the winter or early spring it can be very cold and swimming in the ocean will be out unless you are a member of the polar bear club. In the course of a typical winter week (even January or February) we usually have days with highs in the 70's, hwever sometimes there will be lows in the 30's to 40's (rarely ever reaching freezing).
I loved the club Intrawest resort when I visited and would consider buying there if I found a reasonable resale price. I love the Sandestin resort, and I used to stay there in the summer every year at the Sandestin Hilton for one of our vacations before we found timeshares, and we alaways loved the resort and the area. Don't miss the nearby town of Seaside (
http://www.seasidefl.com/default.asp ) where they filmed the Truman show with Jim Carrey. All houses and businesses are pastel and there are no high rises allowed. It is a beautiful community.
You will not be disappointed with Intrawest or the Sandestin resort. Sorry my response was so long but remember I am southern......