When will it end?
This is just like that pizza game I played awhile back. You play ten levels and you just want the game to end there.
Let's see what good things you threw in there. You had some catchy music. You had variety of locations, sites, and people. You had some clean-cut graphics. It did get challenging. Pause button, mute music & sound, and score system implemented.
What went wrong? Well, I should mention that it took me forever to figure out how to switch grandma in hot tub with grandpa in the sauna. You place one back in the chair and place the other on the spot and then stick the second character in his spot. Why wasn't that in the directions? Not sure. Too bad you couldn't do that when they were ready to pay. Can't tell you how frustrating it is that business chick can't get in the sauna because the party squad are sitting there waiting to pay.
I also noticed that you could practically carry around an extra blanket until the sauna needed some more. Of course only being able to carry two items keeps this balanced. The problem I have is why are there 3 trash cans? If you are throwing it away, could we just have 1?
In summary: Too long, add something new each level (to shorten gameplay), have an option for customers willing to pay (add a cash register spot), and maybe throw in vanity items (to use all that extra hard earned cash on something) or give us the option to buy the next spa treatment.