Honestly, I kind of really enjoyed it.
Lots of nostalgia for sure, but I was also extremely pleasantly surprised by all of the cameos and meta nonsense that was going on throughout the film. So many non-disney characters and so many jokes about animation. I'm honestly surprised Disney gave this movie the greenlight.
Not a huge fan of that comedian as a voice actor. John whatever. But meh, still was able to enjoy it.
If you have a childhood history with these characters, probably would be good to check it out.