I've done it multiple times Meng. Even at 42G they've allowed it. I saw, J Anna and J Karen before they started their day. even if they were booked out that day I explained that I didn't like to book blind. and if I liked what I saw it would enable me to book with confidence next time they were on the roster. I was told to rock up 15mins before they start. last time this happened was as recently as couple of weeks ago at N5M when I wanted to see K Kay