Well, I tried to get into terminal 1 but was refused by security since ticket was terminal 5. I asked for supervisor,who came, but he also refused . But then went to terminal 4 to use wingtips lounge and got in without issue. Security saw I was terminal 5 and asked if I knew this, but still let me in. Sitting in wing tips now. Quite nice and decent food.

So I recommend avoiding term 1 and going to Wingtips in term 4