What about the evidence provided by Dominoes themselves:
"Only about 30% are bought by customers visiting the unit who then wait for the product to be freshly prepared and baked. This is supported by local experience at more than 670 stores in the UK"
But hey, don't let that get in the way of another constructive comment.
So Wayfarer, how many customers do Dominos have a day? You might be right, of course, but if you don't know that, you don't know diddly squat. 30% of nothing is nothing, as it were.
My comment wasn't unconstructive. Just challenging an assertion.