Left/lost my wallet at LAS on my way to SIN. Didn't find out until I am at SFO RCC looking for my RCC card. I have to call in to cancel all my credit cards. AmEx was a lifesaver as they have a replacement card ready to pick up when I arrived in SIN ^. Armed with 50 USD stashed in my carryon, I have to spend a night at SIN airport until next morning to pick up my card.