On March 16, a woman named Pam left a $10,000 tip on a $193 breakfast bill at the Castaway Waterfront Restaurant in Marathon.. “It was a party of 10 and they were waiting on a few more guests to arrive,” said waitress Khara Wilson. “It was a busy morning, but I had a little time so I chit chatted a little bit — where they were from, when they were leaving. I got the impression that she was visiting with her kids and grandkids.”   Wilson said the benefactress said she was from Oklahoma and mentioned she would be flying out of the Florida Keys Marathon International Airport on a private plane.   “And then I went about my business,” Wilson said.  Later the woman approached Wilson and asked how many people were working in the kitchen.    “She could see how many people were working on the floor. I asked her why she wanted to know and she told me it would be a surprise,” Wilson said, “but that I needed to share with all the staff.”   It was. The credit card slip ended up being handed to a trainee. Wilson said she handed over the receipt with big eyes.   I said, ‘Are you kidding me?’”  14-Castaway employees will be sharing in the $10,000 tip!!  Wilson said she’s going to use her portion to pay the bills and put a little aside for an already planned trip to Costa Rica.