"Driving here, everyone was asking even the simple stuff," he said. "And stuff I didn't know the answer to, I just made stuff up."
The last time Rowland-Smith was at the stadium, he was a kid, and he and his dad sat up in the nosebleed section.
On Thursday, Rowland-Smith will be on the field pitching for the Australian national team against the Dodgers, and he might see action the following night for the D-backs against Team Australia.
The stadium has changed quite a bit since Rowland-Smith was last there.
"It looks amazing," he said. "It fits the unique dimensions of a baseball field a lot better than I thought. I was expecting maybe a situation where the seats would be far back, but no. This is amazing. It looks legitimate like a baseball field."
Rowland-Smith did have some tips for his teammates for their off time this week.
"As long as guys can get out of the tour buses and try to experience a little bit of the real Australian culture away from all this," Rowland-Smith said. "They will love it."
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.