GameStop for Prismatic Evolutions - First Come First Serve?

Anyone else's GameStop doing this? How does it tend to go? I went to my GameStop for Surging Sparks and the Pyra and Mythra amiibo and had NO problems at all. They didn't do pre-orders for Prismatic, and they said they're getting a lot in. This is the Somers Point, NJ GameStop in a little mini mall area. How nasty do you guys think this is gonna get? Is it worth going? Thanks in advance!