When the beginning notes chimed in, the image of an alarm ringing came to mind. I can see a character waking up and jumping out of bed with this big, silly grin as he prepares for the day ahead. Life is bright and whimsical like much of the Pokemon universe. Life is a party!
For the description that you provided, the music fits quite well and gets that general party feel across. I love how you come in with a single ringing tone, introduce a flamboyant melodic line, gradually bring in percussion, and build the texture at the beginning. That approach creates a very catchy feel and demand for listener attention. The composition following is catchy and fun.
There are some notable weak points, however. The "alarm" sound at the beginning continues through the entire piece and becomes a bit grating on my ears after a while. Additionally, the same phrase is repeated over and over for around two minutes, and that can lose the interest of your audience.
First, try bringing the melody line up dynamically to set it apart in the mix. Pull the other elements down some. Primarily around :48. This will make the sound a little less muddy. Also, try introducing some contrasting material to change things up. Different harmonies, varied percussive lines, lose the alarm sound for a bit, etc. I liked how you dropped many instruments around 2:36 (though it was a bit sudden). Do more things like that to get away from that same sound that sustains through the piece.
Good job on this; it is catchy and very fun. The syncopated rhythms draw me in. Find ways to create more contrast though, and use more types of musical texture. Keep it up!