The first time w3 did an event here the person had t9 be contacted I think to let that person know we were there along with another group of DJs looking to get in to setup.
Most DJ's ask when the venue is available on their paperwork.Mix .. A) You should have contacted the venue to make sure you can get in on time ..
If the question is not answered in time,
I call the venue a week or so before and find out.