For a 48h game jam, it looks and plays really well!
Gameplay-wise, it's really well structured. I tried to play it without looking at the tutorial first and within some seconds I already knew what I had to do, so props to that. It's a fun loop for whoever likes games like Overcooked, for instance. My only complaint is that if you pack everything quickly, you have to wait for the whole belt to deliver the packages to the van... this game would benefit from a "fast forward button"... or else go full overcooked and spawn infinite requests until a timer runs out.
Art-wise, the models look really good and the sad Amazon made me laugh. My minor complaint was that the game's "cover art" is really different from the game that we get (like pixelated logo over 2D drawing to full 3D game). It's a minor detail for a game made within 48h, though.
Overall it was a fun game, great job!