"Sales are typically at their peak after 5pm, so the busiest time in-store and online is still to come," Lotto NZ's head of communications Marie Winfield said.
Stocked with champagne, chocolate and even tissues for the emotional types, winners also receive a book full of handy tips.
"The decision about what you do with your winnings is entirely yours - you will shape your future," the 60-page book states.
"We hope this booklet helps you to understand the steps ahead of you, make your goals easier to reach and, of course, enjoy your winnings!
"We wish you all the best for the future, and hope you'll look back on the day you found out you were a winner as one of the happiest days of your life."
• Think before you spend: It's best to spend some time to think about your win and what you really want to do with the money before you start forking out;
• Secrecy: Be really careful who you decide to tell about your good fortune;
• Financial advice: Getting help from a professional, they know what they're up to;
• Have fun: It's important to remember to take time to do the things you've always wanted to do for fun, once you've locked in funds for the future.