The Eglin Beach Park at Eglin AFB is located on Okaloosa Island just west of the Destin Bridge and is open during summer months to all DoD personnel with proper ID—all military ranks, retirees, family members, civilian personnel (including all federal employees regardless of duty station) and federal facility contractors—and their guests.
The facility features 4 large pavilions, central deck area, 2 sets of restrooms with showers, and access to the Gulf.
April through October, admission fee is $3 per vehicle Monday through Friday, and $5 on weekends or holidays. Contact Outdoor Recreation's FAMCAMP location at Camp Robbins.
Source: Eglin Life Beach Website