Kenan and Kel are in their late 30s now. Still working at a fast food restaurant at that age would be a little sad. One thing though, Abe Vigoda is still alive so Otis could be in it! LOL
If you want a sequel that you have to read, there was a sequel to this movie written as a book published by Nickelodeon. It's called "Good Burger 2 Go" or something like that. It's a little hard to find but it shouldn't be that hard to snatch up.