But they agreed the antics of the enthusiastic Korean fans, trying to get pictures at every opportunity and frequently answering mobiles in breach of golf's usual hushed on-course etiquette, were not a problem.
"Hey, they want to take pictures of us. I guess that's a good thing," said US team member and world number five Rickie Fowler after Tuesday's first official practice day at the Jack Nicklaus Golf Club in Incheon, South Korea.
"Usually stuff like that doesn't bother me or the guys too much I think in practice rounds. It will be interesting come tournament play, come Thursday," added the 26-year-old.
"I didn't notice it too much while we were hitting," said US veteran of all 10 previous Presidents Cups Phil Mickelson. "There was so much of it, we tuned it out. I feel like it will be the same for everybody."
South African Branden Grace said the unusually noisy crowds might give his team mates an edge on the Americans, as they play more events in Asia.
"When you come to Asia you expect it," Grace told AFP. "As European Tour players we've been exposed to it a little bit more than the US guys.
