The problem is also that air travels from abroad are still fairly limited, going by car seems fine and being in big casinos with a lot of space for social distancing it's alright. But being in an airplane for hours with plenty of people fairly close around doesn't seem so clever. Unforunately there is no distancing on air planes yet - I would definitely avoid flights as long as possible. I think some airlines even stopped completely to fly to Las Vegas during the pandemic.