Hello! I'm back with bugs!
1. Party Hats: The interaction boxes around them aren't large enough, meaning it's really hard to place each one down.
2. The Table: I can partially walk through and on top of the table.
3. Collision Outside: I soft-locked myself outside because I clipped through the wall of the house. I recommend adding more collisions.
4. Music: Have the main menu music get quiet once the game starts. Main Menu music doesn't serve as ambience though.
5. Confusion: the game was really confusing to get to.
6. Animating the characters: As the other comment said, use Mixamo (it does it for you!)
7. Stylizing all UI: For the dialogue box, instead of just a black box with text. I'd recommend having another box (possibly white) slightly bigger than the black box, giving it a different color edge.