From the McHenry Police Department:
Advisory: Queen of Hearts entrance to VFW limited to Westbound only. No left Turn.
If you are en route to the VFW, due to the extremely high level of traffic in-bound, we must close the entrance using the left turn lane from Eastbound traffic.
You need to come Westbound and turn in that way or use other parking. See this link for the parking map or attachment.