Hi Allison!
The Expedition Everest Challenge Family Edition looks like it's going to be so much fun!
There wouldn't be enough time to pick up a packet before the race on Saturday morning. The race begins at 10:30 a.m., but the expo won't open on Saturday until 10 a.m. You would need to pick it up on Friday evening. Here is the expo schedule:
Packet Pick-Up
ESPN Wide World of Sports Complex
12:00 p.m. -7:00 p.m. on Friday, May 3, 2013
10:00 a.m. – 4:00 p.m. on Saturday, May 4, 2013
Since Wilderness Lodge is not a host resort for the race, you would need to provide your own transportation to ESPN Wide World of Sports for packet pick-up. The best thing to do is arrange for a cab to take you. You can do this at your front desk. The packet pick-up process will take about twenty minutes.
Please let me know if you have any other questions!