Gov't civilians, and DOD Contractors have access to all base MWR facilities, this change happened since I've been here, and I think it was about 2 years ago.
You can use the Drill Hall, the swimming pools, Solomons Rec Center, you can join the Archery Club, the Skeet and Trap club, the Sail Club.. etc.. etc..
For club memberships there are different prices for Retired Military, Active Duty, Gov't and Contractor, but the prices are VERY affordable for anyone.
Sounds like a lot of high living on the taxpayers' dime to me.