Checks for trip to Vegas?

I'm a Brit and went to LA last yr and really enjoyed, but soon have my trip to Vegas I just want to triple check in case I have missed something for my trip that I need by law to be there etc. OK so I have passport, travel insurance, ESTA check (visa Waiver Program which I purchased for Last July and understand lasts two years so don't need a visa so think I don't need to do anything more with this although will take paper copy of it), currency, hotel and plane bookings, luggage, trips to and from airports, activities sorted, phone and new sim for USA to use also for navigation if need.
I have everything printed and ready, please could someone confirm I have everything and there isn't something I'm forgetting (just wanna be sure I have everything in order)

Drive to Vegas

You seem way over-planned for a trip to Vegas.
Enjoy some spur of the moment activities.

Your bail bondsman's phone number.

The thing about Vegas is, if you forget something you can do it there, for example toe airport if right by the strip and there are a lot of shuttles to the hotels, so if you don't have that made, you do it right there are the airport. You don't need a VISA, there are plenty of people who will set up day trips if you see one you want. The hotels all have your reservation on file so a lot of paperwork isn't needed-you can write down the res # somewhere if you wish. A US phone SIM is prudent. Navigation is not much of a problem there, depending. So I think you have all you need.

It sounds like you are well prepared.

However, check the weather for Las Vegas and make any packing changes you might need. For example, the high temperatures for the next two weeks tend to be around 15 C and the lows around 5 C. It isn't really cold, but you need more than t-shirts and shorts for clothing.

You'll also want to make sure your credit cards are of the kind that work in the US.

If you plan to gamble a lot, be advised that there are daily limits on how much money can be withdrawn via banking machines (typically around $500 USD/day). Assuming you aren't familiar with casino gambling and plan to gamble, I suggest some advance reading on how to play the games to increase your chances of winning (or at least reducing your losses). Such books/articles are common and should be easy to find.

While not specifically related to traveling to Las Vegas - ONCE THERE, have plenty of water on hand, or know where there's some. It is in a desert and a lot of people run into heat and/or hydration problems. You will also likely do a lot of walking. Some of the casinos have ~5,000 rooms, so they are basically small towns unto themselves. Even if you never leave that complex, it can still require a lot of walking.

It's one of my favorite places to visit, even for a non-gambler; but it's not without it's downsides. Be warned that pick-pockets are common, especially at night for the street shows. Plan accordingly.