"Premium members are eligible for both regular and Premium bonus prizes awarded at the end of the Festival of Neggs.
Final prizing is determined based on your overall participation and your Premium status during the event. Similar to regular Final Prizes, to qualify for all Premium Final Bonus Prizes, you must find each day's Neggs on the day they're released. However, even if you don’t qualify for the top-tier Premium bonus prizes, being a Premium member still offers many bonus rewards. All players will earn tiered prizes based on their level of participation throughout the event. To get the most out of the event, be sure your Premium membership is active before you start collecting Neggs on Day 1!"