Well of course they are because the area is still radioactive. The thing is though, is that the short bursts of radiation you would get from being there a short period of time would be something around an X-Ray or a tad more. The area will probably be radioactive for many many years to come, just not as bad as it used to be in the 80s/90s. BTW when i talk visiting to check it out im speaking about Pripyat, not Chernobyl. I dont think anybody but scientists and military are allowed around the plant.