That's not usually the social contract in gambling. The house usually goes out of its way to make sure you know the technically correct play (i.e. the one that 9 out of 10 experienced players would make). These are meant to be games of chance, not games of skill. At least at the level that you would never draw to an inside straight, if given the option not to -- that's just dumb. As others have mentioned, there are times you might turn in a winning hand in hopes of drawing a royal flush, since so much of the return is in the jackpot -- that's less clear-cut, and I wouldn't expect a video poker machine to make the jackpot-seeking recommendation, since it's not how you would play in a 5-card draw table game.