If I had a lot of capital I would go to play poker to a good casino in my country.
If I was rich I would go to Las Vegas straightaway.
It seems a bit suspicious to me from a Newbie member to ask this kind of questions. But maybe he is the alt account from a veteran user who doesn't want to disclose his plans. Maybe he is just a shy bitcoin millionaire who prefers playing poker in pyjama

Anyway, if your intentions are legit, I hope you take advantage of the information you are receiving in this thread.
The thing is that a high roller in Las Vegas you need to get invited to high stakes games, these games don't happen on the usual casino floor, rather in some private lounges of the hotel. In my state there isn't even any Casino with high stakes games. There are only 2 larger casinos in my area and both of them have only 1 low and 1 medium stakes table. But now with corona it's all closed anyways. If I had the money and don't care that much about winning or losing, I would give it a try to play on high stakes tables. But as soon as I notice that my opponents have a big edge over me, I would switch down to lower stakes tables.