Great Product by the way...

So my Client has a business,  but has added on Fruit/veg boxes as an addon to his business.

At the moment he can only handle about 25 orders a day on top of his existing delivery schedule. 

Is there a way to "cap" or stop orders once the 25 limit has been reached?  At the moment they give me a phone,  i go in and remove all stock so no more orders can be placed for that day.  Put up a spalsh screen so im not explaing on FB  the situation..  Not a great way  but it worked yesterday.  Anyone have a work around or come across this scenario before.  i know  most businesses want to sell as much as possible, but at this moment in time, its not possible...   www.raithfruit.com  is address of page.. thanks