It's got a nice atmosphere, and I love the art. The gameplay is simple, witch is good, but it doesn't have rewards for more difficult drinks. Rather than thinking "Let's do this challenging drink", it's "I hope there are no hard drinks because that's annoying". I saw no reason to try the ice drinks because that's just more difficulty with no reward.

 There are some bugs I found, nothing game breaking but definitely immersion breaking.

1, When you finish a drink, the drink finish animation usually pops up in the middle of the screen, blocking me from giving the drink to the customer. I can't find any rhyme or reason, because sometimes it pops up in the corner out of the way.

2,  because the gameplay is so simple, it's really easy to earn stars. This is good, because there is a character who progresses as you earn stars. Unfortunately, as I learned, you can be too good and skip stars, skipping some of her unlocks (I skipped the 2nd pic). 

Overall, great game. I wish it was a touch longer, with some sort of reward for more complex drinks. Liked all the art and the girls. Still has a few bugs here and there.