Ok, I hate to be the Debbie Downer but Tim
was hosted.
There are a ton of low-level IG "influencers" (I hate that term) who were also there at DS to see Wish. DisneyParks did invite him and these others. Seems this was an event where they invited anyone with a modest following on IG. It was also a park promotion thing because they had a sign there that listed all the places Wish is incorporated into the parks, like a drawing thing at Rafiki's in AK, and things at Epcot, etc. There was special star merch like Tim showed in his story. I think Disney was desperate for promotion for this one, as someone else said. The entrance with the banners has been up since the weekend, so it wasn't like they rolled out a red carpet for Tim.
Check out pixieandmagic on IG and you can see an example of a hosted person...