Hi Pamela! I love how you're not wasting any time getting your Disney vacation fun started on the night you arrive! According to the
Hollywood Studios park calendar, Fantasmic will be performed at 8:30 p.m. only on August 30. Since you likely won't arrive at the Pop Century until sometime between 8:30 and 9:30 p.m., you unfortunately won't be able to catch Fantasmic on your first night. The show is, however, playing every night during your vacation so you'll have plenty of opportunities to see it!
If you want something fun to do on your first night, consider heading to
Downtown Disney after you check in at the Pop Century. It's open late, with lots of restaurant, shopping, and nightlife options.
Have a magical vacation! Come visit us again at the Moms Panel if you have more questions! We're happy to help!