erm, well, Select told me that they usually will prepare 20% extra on top of what you order. In case last min got extra pple, and customer didn't say...and also, they prefer to give extra food, so that wun have situations where there's not enough food - wun look good on caterer also. That's what the sales person told me lah. heehee...
I think asking for 10-20% less is ok. Some are kids or old folks who wun eat as much as the average guy, kinda thing...
Sorry ah bride, very busy at work. Haven't found the pics for you yet...