The couple I have been too were great places. I am retired DOD Civil Service and get the same privileges...
Being a retired DOD with 42 years combined AF and Civil Service time would probably would have to relinquish my stay to a active military person at those places however... Retired Active Military probably has stay rights over DOD folks as well...
I know in my work travel days always associated with us DOD types staying at government bases etc... I got moved out of Sheppard AFB TX base facilities one night around 2AM one night by an active duty Air Force type person. After that happened I would never stay at the Government bases anymore... Kind hard to find a hotel room after 2AM hehe... I slept in my truck that night...
I would find the sites you like and use the heck out of them haha...
Roy Ken