Let's be fair here..
For people who tells the story from their side or point of view, the end story, of course, will be made to cater to their whims and what have you not..
In any case, to cut a long story shot. I watched Cats this coming round as well.. albeit not on the same day as Ms Do Su Ern and I witnessed a similiar occurrence to what she described... Only that, I wasn't part of the picture grabbing group that got stopped by the ushers and was able to observe the situation.
Yes, although there was a standard no video nor photo signage outside the theatre entrance, but it is not as if the Esplanade bothers to take them down from show to show... and of course photography is allowed during the intermission and show as the announcer set the records straight from the onstart of the show. the only conditions were, NO FLASH PHOTOGRAPHY, as they may blind the actors vision during the show. and why mar the performance for the people sitting around you with your camera clicks anyway?
And while some of them may think that no flash does not apply during the intermission, it does not mean the the actors were not affected by it. The actors were kindly posing and interacting with the audience as part of an interactive experience as mentioned by Ms Do. But what I saw, was over zealous audience, who put a point and shoot camera 15 cm away from their face and flashing away... U can tell the poor actress, in this case, was visibly disturbed by it, thou she still kept her cool and finished what she set out to do there, and went away. I noticed she went up to an usher and whispered something into her ears, and that was when they intervened...
They went up to a person whose camera just flashed, and just put a hand infront of them and said nicely, sorry, no flash photography, and to that. the person rudely replied. "I did not flash what" I was like ........ U did not, but ur camera did.. and she brushed the usher aside and continued chasing the pictures.... I was honestly appalled by it, and what do you expect the usher to do other than to be more firm about it?