Oase and Sharks are reopened. It appears customers must show proof of vaccination. Not many women at either yet although I visited late on a weeknight. The cuter women had all the attention and were difficult to get any time with. Perhaps things will change as things continue to reopen.
are either or both Oase and Sharks raw/ bareback/ AO places
Nope. The closest to that is a BBBJ or blowjob without a condom. I have never tried the AO and not sure it is widely offered in the FKK context. I do believe I have heard of one FKK in the past where it is available. But my suspicion is also that the quality of the women decreases in a bareback/AO establishment.
A couple of years ago, Germany passed a law that banned "uncovered" sex of any kind, to include BBBJs. You might find a girl at Sharks or Oase do a BBBJ for an uncharge. There are still AO FKKs, the closest to FA being FKK Dietzenbach. But, everything is literally behind closed doors. And, you're not likely to find supermodels at Dietz.
It is rare in the big fkk clubs but does happen with some girls. Don’t inquire about this in the mainstream fkk clubs, girls talk about mongers and you may get blacklisted. You can always do the ao clubs