Optimal order fulfillment in the mobile game township

When fulfilling orders, do not just produce what you need for one order but enough to fulfill all order at the same time.
When you produce several simple products as ingredients for several different more complex products then use the ingredients first in the products that take the longest. In that way the total time for all the products in total will be shorter.
Then it is pretty easy to get through the events. The achievements/presents/decorations that I got then for free into my storage.
I have placed all these items in my zoo, because I have right in the beginning of getting the zoo so much space. I did not place it in town because either I would have to buy the space expensively to place everything it might look nicer but can I buy something for likes??