It would take me a week to prep the online store for a 2 day sale
If the item is on our webstore: Just add the items as per usual, place the order, and add "EASTER SALE" to the comments section. As long as you make the order during the sale days, and we still have it in stock (we have dedicated staff purely doing online and phone sales, so we'll set things aside as you order them).
Alternatively: Phone/email the order in. It'll still take us 2-3 days to charge through every order, but rest assured you'll get the discounted prices as long as the orders were done on the 6th and 7th.