This is how I got a 5 Star Vet Clinic with no cheats!
First my sim worked on their Veterinarian skill till they reached level 10. My other sim leveled handiness till level 10.
Next I saved up enough money to open a clinic with the most expensive equipment needed and was nicely decorated till it gave my sims and patients the "Beautifully Decorated Happy +3" moodlet.
I upgraded my surgery station to "Upgrade to never break".
Then I put the price mark up to 75%.
I had a sim handle patients and one that cleaned up and made treats, gel, and banter with patients.
How to handle patients:
When the patient's owner signs in wait till they get the "Wow! This is a great looking vet clinic" icon above their head.
Next greet your patient warmly (it is an option when you click the owner or pet). Then you will see an icon over the owner's head that says " The vets here are great with pets!".
Right after you will see an hour glass icon over their heads that means "The wait times here were short and sweet!".
At this point the owner's star should change to a 4.
You will also begin examining the patient. Any time soothe pet or clam pet option is available do it! (Just one though)
Then examine the pet; look for obvious things like blue fur check skin/fur inspection or vomiting examine mouth. keep an eye on that stress level, keep it low at all times.
Once you are ready to treat the animal do so correctly. Your sim will automatically administer treatment lower the patient and bill the owner. This is when you should see the owner's star change to a 5. Sometimes this is bugged and I have to save game, exit, and restart. Usually one restart is needed.
Very important! If the treatment option that you need (meaning the green thumbs up) does not appear at the examining table you must use the option "Move to surgery station". Make sure the pet has no stress before clicking this option. Also don't use soothe pet nor clam pet unless you need to, they gray out and can't be used again right away.
Once at surgery station click on the correct surgery (look for the thumbs up).
Again the pet will come out with a cone looking sad but healed up and the owner's star should change to a 5 after you bill him.
I did not use or buy any perks. I did not have any employees. Took me 53 patients about 15 sim days. I opened from 9-5. I kept it at the slowest speed. I had no advertisement. I also always allowed customers. If I had more than two I would Disallow new customers at the vet podium.
I tried many methods this one worked well for me.
Happy Simming!
