I've just gotten married a week ago and the ceremony was presided over by Prof Yu. He was very efficient and friendly through my email exchanges with him, however he was completely different on the AD.
The ceremony was intended to start at 5pm, it however started about 5:05pm. I have had feedback from various helpers that Prof Yu was unhappy possibly because nobody 'received' him when he arrived? At many times he told my cousin that "I can actually leave one you know?" This admittedly was my fault as I had forgotten to delegate someone to look out for him (I was in the bridal suite and 'cannot be seen' until the march in).
Our ceremony was very short - we were asked to say our vows together which I thought was a bit weird? Then after signing the certificate, my photographer requested me n my hubby to take a photo with our parents. Prof Yu then walked over after, saying that "it's ok, JP is not important, no need to take photos. Anyway I gotta go". So I tried to hold him back by saying no no, let's take a photo, but he insisted on going. So my hubby had to run after him with the ang bao and apologised for starting the ceremony late (mind you, 5mins late). Then Prof Yu uncharacteristically said, I need the car park coupon, parking here is very expensive!!!
My receptionists also told me he was rude to my guests by telling them "Yes you are very late!!!"
I think these were completely unnecessary as he was there to preside over a happy occasion, just thought it is completely unprofessional of him.
We only 'selected' him cos he was my lecturer in NUS and he came so highly recommended on the forum. Maybe he thinks he is a celebrity now.