Infinite amount of money? Hell yeah!!!!
I will still gamble, but not for the sake of money anymore, but for the sake of fun, and every time I put a bet, I always have this "YOLO!!!" mindset where I will always go all in to ALL of my bets because at the end of the day, I have an infinite amount of money.

Of course realistically speaking, this will never happen (at least if you're the likes of Elon Musk or Jeff Bezos or those famous billionaires out there that knows how to make huge amounts of money). Well, I might better spend those money travelling around the world, or giving it to those who are in need because... why not. I mean I'll be a philanthropist in an instant if that happens.
Anyway, gambling isn't on my priority that's why I might not still be doing it if I have this thing on me.
Having Infinite money and gambling is no longer something we can enjoy. Gambling may be for entertainment, but it will still give you at least some winnings from your bets. It's like playing a demo game of gambling. That's what it's like when you have unlimited money. When you're almost out, you can refill, and the sensation is clearly different.
I prefer your second option, where unlimited money can be given to those in need, traveling the world with all its beauty, and maybe occasionally going into space to build a house on Mars
