Thanks for the review! I've always enjoyed BurgerTime, and I consider Diner to be a worthy sequel. It's remarkable that Diner turned out as well as it did given its unusual development path. INTV made effective use of the unfinished game code they acquired from Mattel: they contracted with the original programmers to complete and release games that had been started at Mattel, and in the case of Diner, they repurposed code that was originally intended for an entirely different game. As has been documented elsewhere, Diner was started at Mattel by Ray Kaestner as a sequel to "Masters of the Universe." As it happens, Kaestner also developed Intellivision BurgerTime, so for INTV, he put the BurgerTime characters into his unfinished "Masters" sequel. Diner was the result.
(A few years ago, Intellivision Productions sold autographed 10" prints of the original Diner box artwork, created by the late Keith Robinson. I framed my copy, and it will always have a prominent place in my game room.)