For Bryson DeChambeau, it came when playing a practice round.
The LIV golfers are feeling genuine appreciation from Australians ahead of the breakaway tour's inaugural event in Adelaide starting Friday.
Koepka and fellow LIV golfer Dustin Johnson went to Adelaide Oval on Sunday night to watch the finale of the AFL's Gather Round.
"It's a man's sport, man," Koepka told reporters on Wednesday.
"I mean, the hitting going on is pretty impressive. Sometimes you just wonder how the hell they walk away from it - and they just get up and shake it off and keep moving ... they're tough."
More impressive was the reception Koepka and Johnson received.
"You see a lot of people just passing by you, either in the hotel or at the game," Koepka said.
"Everyone is just super appreciative that we made the trip down here and we're playing.
"It has been a long time since anybody (in Australia) has really been able to see the quality of field that we're bringing this week."
Johnson concurred.
"I felt very welcome," he said.
"I don't know when the last time, or if, Adelaide has ever had a big golf tournament ... everyone is excited for us to be here."
DeChambeau played a practice round at the Grange Golf Club in Adelaide's west on Tuesday.
"The volunteers were awesome, they were so appreciative," he said.
"They just watched every single shot we hit, just genuinely loved us being here.
"It felt good for us because it was like 'man, they appreciate what we're showing'.
"It's going to be a great week for Australia."
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