We highly recommend visiting the party. As a separate hard ticket event, it can be pricey to pay for another ticket. To save money, purchase tickets on a day you don’t plan to visit the parks. With an entry time of 3PM, you can spend the morning relaxing before heading to the party in the afternoon.
Party tickets are cheaper earlier in the season, like August, and cheaper on Tuesdays vs Fridays. If Walt Disney World does reopen before August, the 2020 dates are listed below:
August: 13, 18, 21, 25 and 28
September: 1, 4, 7, 11, 13, 15, 18, 20, 22, 25, 27 and 29
October: 1, 2, 4, 5, 6, 8, 9, 12, 13, 15, 16, 18, 20, 22, 23, 25, 27, 29, 31
November: 1