I am sure that there is luck for the beginner in a gambling game, but most of them don't have luck in their first time in gambling. so base on your story, you have a big success in your first time, and you can win a lot of money.
for my first time in gambling, I don't have big luck, and although I can win the dice game, it doesn't mean my winning money is big. at least, I can get my money back so I can come back in the next day. and yes, I believe for the beginner's luck in gambling and it could happen to anybody.
I agree, i also believe in beginners luck, I've known some people who wins on their first bet of the game. I think they are just lucky enough to win in their first bet of gambling. I don't win in my 1st bet but there are still a lot of who believes in it because they've experience it. So nothing is wrong believes in beginners luck.
I think, there is no difference first, second or third game, if you are lucky enough at that day, you win, that's all.