Great concept, unique playstyle, and I loved the way all the extra characters just threw extra stuff around! Took me a second turn to understand there were multiple hiding spots, but got the 1850 anyway! Artstyle is great and fits together great.
I did get stuck on furniture a few times, and on the first game a partygoer threw a bottle where I couldn't pick it up. Another run I was able to pick up the wine because it was too close to the bottle maybe. Also in my winning run there was like 1/4 of the time left and I had to just wait.
That stuff is all minor though. the game is excellent and really works well. The dialog is good too with the multiple endings based on performance!
For improvements I think music would be top. Are we hungover, or panicked, or just frantic? Music would go a long way to adding drama to the situation. I also feel like you could build some mixups into the game. Maybe the parents call a second time if the player is doing well to say that they took a shortcut, or if the player is lagging a call to say they're in traffic. Also we don't see the parents(maybe they just crash through the wall)
edit: Oooh also I thought for a second that hiding the cigs in the plant damaged the plant. Maybe limiting the number of times you can use a hiding spot could add some more mixups.
Loved the game. Loved the art. Loved the concept!