Since he would only be there from 3pm, we went for lunch first, before walking slowing around to look for him (he told me the event organiser placed him in a secluded corner). When we found him, he was probably just setting up stall and since everyone was just 'looking and seeing' we just plonked Jaslynn and Justin onto the seats to start the ball rolling.
The kids were shy at first, even though they've went to Uncle Jit Leong's house a few times to play with 嘉乐 and 嘉喜. They warmed up pretty quickly and soon 'smiled' for Uncle Jit Leong to draw them some nice caricatures.