YES I finally did it. Finished!! Yes you are right kdt - i managed to get thru the final level quite easily - I got almost 65,000.
In the rest 1-4 , i did a small and costly mistake, I should not have collected monies and plates at the same after they finished eating, I lost out in the chain bonus. I found this out in final level of 4th rest, after that, no prob meeting the goals, sometimes exceeded to the expert level.
As for the snacks and drinks, I find them sometimes useful. Dont hv to entertain them all the time, but once you see the hearts level for those on the table dropped to more than half, quickly serve them drinks, after/before you serve them the meal. I serve 4-5 tables only at one time even when the queue is long. After you hv collected the orders, go to the podium and/or while they are eating. Go to the podium as often as possible. Lift those who are about to leave to prevent them from leaving while at the podium.
This is a simple, yet exciting game. Cheers everyone.