Fast Building and Stocking
Once you start building a level on your Death Star, or stocking one or more levels, exit out of the game. Head to your device's system settings and adjust the date and time forward. When you return to the game, the time you specified will have passed and the stocking or building project should be complete.
Tips and Tricks
Make sure you've stocked up a commercial floor before tinkering with any of the staff working there.
Keep the best people for the job in each store so as to maximize profits.
Always evict useless tenants even though you'll lose some earnings while you wait for the new guy to turn up, but a rubbish worker always costs money in the long run.
A good tactic is to leave one block always empty cuse You never know when the perfect resident is going to be looking for a new home, and you want them to be able to find a space to stay.
Upgrade your elevator at the first opportunity. Simply because the more visitors you can ferry around the Death Star quickly, the more money you'll make in the long run.
You should always try to keep your residents working on the floors they have the best stat affinity for. If you do this, you'll get a much bigger discount on the cost of stocking the commercial units they work in.