There's some parts of this that I really like. The overall vibe is quite neat, very cheerful. A lot of your sound choices, like the flute and lo-fi strings would feel right at home in a classic N64 or GBA RPG. The huge range of instruments and styles represented in your mix is pretty great. I love the arrangement.
However, by modern standards, your sample quality falls short of what we generally expect for OCR's bar. Across the board, it sounds like you're using some pretty low-quality soundfonts, and I think just about every sample in the mix could stand to be upgraded. To name a few though, the piano and the lead synth could definitely stand to be replaced. The humanization on the piano could stand to be taken up a notch too.
One thing that did sound pretty great to me was the marimba, I thought that was very well executed, and the writing for that instrument is pretty charming. Sound effect usage won't be everyone's cup of tea, but I found it quaint, too
Palpable is also right on the money about the ending being too abrupt. At the very least, leave a longer fadeout at the end of your track.
Overall, there's a big need for sound quality improvement in this mix. I'm not going to beat around the bush, it would need a bit of an overhaul in my opinion to bring it up to OCR standards, but truthfully I enjoy the arrangement quite a bit. I'd say that it would be worth the effort to get this up to par. Hope to see it again!
NO (resub!)