As for me I think that it is not necessary to have any knowlage at all to play casino games.
Well, you've stated that to be your own perspective to casino gambling but I think, one ought to know the rules that governs any game your playing for example. Casinos often makes use of casino chips in exchange for your money value and that's what you get to stake with. A good knowledge of these chips as to how they are valued would enable you to know just how much you intend staking on a game and what returns to expect should you win.
I know the op's statement depends on luck to win a game but not knowing that it's not all games you can win based on luck, some games require players' inputs and skill activation to win. A newbie can easily win on dice since it is based on luck but some other games like poker and the rest requires a player to contribute to the winning, luck has few chances and only that requires little to no players contribution to determine its outcome such as slot, dice those are the only luck base games I know.