If you're looking in Destin or SoWal west of the outlet mall, I'm getting about $100/night for Suburban Lodge in Destin and Comfort Inn Niceville with availability on your dates as of tonight.
We stayed at that Comfort Inn a coule times when we moved down here in 1998. Clean and popular with the Eglin AFB crowd. A coule of times, I think Mr. Mouse and I were the only civilians in the breakfast area. Hampton Inn on US 98 in Mary Esther ('burb of Fort Walton Beach) is also showing availability on those dates.