Hi Jessica!
You're going to love the Tomorrowland Terrace Fireworks Dessert Party! It's one of my absolute favourite ways to view the Wishes Nighttime Spectacular fireworks show.
Package Pick Up in the parks closes at the same time as the park does. If the evening you're visiting Magic Kingdom, the park closes at 9pm, package pick up will close at 9pm also.
Be sure to pop by before you head to your Tomorrowland Terrace reservation. Since you have a reserved table for your party, you'll be able to safely stow your bags at your table while you enjoy your desserts, beverage and fireworks.
Package Pick Up services are available in all four parks. You'll find a listing of the exact locations for your convenience at this link to the
Guest Services, Package Pick-Up page. When making any of your purchases throughout the day, simply advise the Cast Member processing your purchase that you'd like your parcel(s) to be sent there for pick up at the end of the day.
Thanks so much for visiting the Moms Panel. I hope to hear from you again soon!
Wishing you a simply Magical time at Walt Disney World Jessica!
Kirsten