Showing a different message based on date and location

Hi,

I’m wondering if there is a plugin(s) that can help do this, or will I have to hire a programmer to create a custom solution.

I have a client who delivers water to different regional zones each day based on a schedule.

So on Tuesday the 27th, he may deliver to zone 1, and he’ll be back to that same zone in about 2 weeks. The next day, he’ll deliver to zone 2, etc.

He would first sends an email to all residents located in zone 1 a couple of days before the delivery day so customers can place their order online. The email would mention that the deadline to place their order is on the delivery day, but no later than 8am. After that, the customer will have to wait 2 weeks for the next delivery.

All too often, customers would place their order too late that day, or even place their order a couple days AFTER the deadline and then wonder why they didn’t get their water in time – they don’t read the red font warning in the email and on the web page.

So my solution is to implement a system where when the client clicks the submit button to place their order, a pop up window appears and tells them when their order will be delivered. If they missed the deadline for their location, then a warning pop up window appears which says that they missed the last delivery schedule and the next scheduled delivery will be on [insert date here]. Then they would click on “continue” to finish placing their order.

So whatever system I implement would have to know the delivery schedule for each zone for the next month or two so it knows when the next delivery is for the selected zone.

Is there a plugin that exist for that? Is there a term I should be googling that would list such plugins or solutions?

Thanks.