Silver and gold "rounds" (as they are called) minted by South Africa (Krugerrands), USA (Eagles), Canada (Maple Leafs), Australia, New Zealand, and so on are ne

Silver and gold "rounds" (as they are called) minted by South Africa (Krugerrands), USA (Eagles), Canada (Maple Leafs), Australia, New Zealand, and so on are nearly as liquid as $100 bills, and you'd probably only lose at most 5% . 90% silver US coins minted before 1964, as well as very common date and poor condition US gold coins also are easily bought and sold fairly close to spot. (Edit, adding: I just did a quick peek around the web and found spreads as low as 0.6%, if you buy and sell with that same particular company. In fact they also will hold it for you so you don't even have to physical take possession and deal with mailing or transporting it at all. While I would expect they may have some rules about that, it does show how competitive the market is and gives some idea of the situation.) If you buy gold and resell it whereever then you have cash. The casinos in Vegas don't ask a lot of questions, nor does anyone else, really...(yes, this includes the good ol' Moonlite Bunny Ranch too..lol) All I'm saying is that you can easily get cash from credit cards which you can then buy whatever with, so I just don't see the point (well, I may...) of them limiting your usage of their cards.