Practice on any SIM leading up to the interview, then come out early to SLC and stay at the Candlewood or Comfort Suites at the Airport. American Aviation is in walking distance and both hotels run a shuttle to the SkyWest hangar. You'll only need an hour or so "differences" training to see how the ATC-810 handles, and they have the whole thing set up as an interview gouge so it helps quite a bit.
The Candlewood is where all the pilots stay during training and is sometimes booked full. The Comfort Suites has free breakfast in the morning (if you have the stomach for it the day of your interview).