I ran into Arnold Palmer twice by accident. Not at any tournaments.
The first time was in the mid 1980's at Palwaukee airport outside of Chicago. We were having lunch at the restaurant, and Arnie walked in, white shirt and tie, to go upstairs to flight operations and check in. He had just landed his jet. He stopped at our table after I pointed him out to my business partners and chatted for a few minutes.
The second time, in 1998, I was golfing with corporate buddies in Palm Desert. That evening we went to a restaurant, and waiting for a table, we went to the bar room. Lo and behold, Arnie, cocktail in hand was in the middle of everyone having a great conversation.
The guy never fails to take time and talk and have a good time with everyone.