It’s a good way to get into Universal, but only because of the broader networking potential. It’s important to remember, however, that Universal Creative has nothing to do with HHN / Entertainment’s Creative Design (Art and Design) cell. You’ll rarely even get the opportunity to engage the HHN people because Creative doesn’t work on property. With Creative proper, you’ll work on rides, permanent stores/shows theaters, and overall park scenic. Creative proper is widely considered the more prestigious of the two departments as a result.
EDIT - Engineering and design is great (especially industrial design) if you’re looking to get into any of these sort of positions. However, most of the HHN “designers” came predominantly out of theater and writing. Most of the visual design work is freelanced out. If you want to get noticed THAT way,
Slice Network is where to start.