So I had a dream where Universal Hollywood was holding a Waluigi Festival as some after hours event in similar vein to the passholder takeovers and such. Ironic as it sounds, I only like saw the front of the park (so no SNW and my dream ended before I could even go inside) but they had it decked out and looking vibrant and purple, almost as if you took the aesthetic of the Waluigi Pinball track in Mario Kart and decked a park with it. It was a weird dream, but it looked like something on a similar caliber to special events hosted at the Disney parks (like Oogie Boogie bash, kinda). Especially since they had some photo ops even around the gate.
I doubt we'd actually see something like this, but as it randomly just happened in my mind, one can dream. XD