Accommodation: From the very cheap Super8 to the 5-star hotel, it's completely according to your budget.
The problem of eating: from American fast food to French food in five-star hotels, Italian food has everything, and every hotel has a very good restaurant. It is best to find a cheap buffet to go to major hotels.
It takes about four and a half hours to drive from California and walk 10 to 15 expressway on the first day. There is no toll booth in the middle, unlike China. There is a gas station on the road, which may be more expensive. You'd better fill it up before you leave.
There is also McDonald's fast food on the road, which should be a big stop on the way out of California for 2 hours. You can go to the bathroom for a drink or a hamburger, and then continue.
It takes about an hour to get to the Nevada border. There are many small casinos where you can rest and go to the toilet. From here, there are several outlets (similar to those in Beijing) that can buy things, which may be cheaper, but the styles are not the latest.
Continue driving for about 1 hour, and you will arrive at the world-famous casino-Las Vegas.
Suggest your first day:
You can visit major hotels and casinos, eat and drink, and walk on Strip Road, the largest avenue, at night to experience the world casinos. You can also visit the old city. Some very famous casinos, horseshoe casinos, are world-famous.
There are many places to feast, but don't try it casually. Somebody better get it.
The next day: You can visit the Hoover Dam, which is very famous.
On the third day, I went to the Grand Canyon (it's better to go by plane, it's a little far, and it takes 6-7 hours by car). This information should be correct.
If you like to play golf, Las Vegas has several good courses, good shopping and many restaurants to eat (cafes and buffets in Italy, France and the United States are all very good).
You can bet a little, but don't play too much
I hope I can help you!