They are probably being vague on purpose. If they said:
"We are going to deliver the kiosk on the 28'th of October. You should probably have it set up that night, don't wait for the morning...You should probably vacuum your store as well, make it all pretty looking. Oh, and move all large objects away from you front counter, enough to make room for a huge line of customers, no reason. Is your store open the next day, that's entirely coincidentally a Sunday right? You should probably open up even if you have religious reasons, no reason, who said there was a reason, I didn't say there was a reason........28'th"
Then people might suspect foul play is afoot.