There is no regulation prohibiting smoking in the Buddhist precepts… Drinking itself is not evil, but… As for gambling, it is strictly prohibited in the Buddhist sūtras because…
The ritual, simple but solemn, is designed to cause one to wholeheartedly take sanctuary in the Three Jewels, to rely on and revere the Three Jewels, and to bring forth pure, staunch faith and confidence.
Buddhism encourages vegetarianism, but it does not require all Buddhists to be vegetarians.
Buddhism acknowledges the existence of spiritual powers and their effects. While spiritual powers can be great, they cannot nullify the law of cause and effect.