I've been traveling around the US on business for over 30 years, but have never been to Vegas until last week. Went for 4 days. Most of the experience didn't surprise me, and will be no surprise to my fellow posters. We stayed at the Paris Hotel.
Visited Caesars Palace, the Bellagio, and Venetian hotels. Also visited Planet Hollywood, Horseshoe, and MGM casinos.
No surprise but smoking is still allowed and prospers in the casinos and nearly everywhere.
Very few buffets left. Lots of celebrity chef places have sprung up. Food is relatively expensive.
There were very few homeless people on the strip.
The city overall is cleaner than most medium sized cities.
In general, the tourists have no clue, or else don't care, about simple manners or how to act in a crowd.
The Paris Hotel didn't meet expectations for a hotel on the upscale side. No coffee machine, fridge, or microwave, and the TV had problems that never got fixed after 4 attempts.
The food was good everyplace. Notable was Carmine's for dinner, and Planet Hollywood twice for breakfast. Service was spotty, but mostly good.
Saw the Eagles at the Sphere. They are still good, and the Sphere is the best venue I've ever been to, hands down.
Airport is just OK. Pre-Check was closed, but the cattle line moved fairly fast, and security only took about 30 minutes. Of course most of the passengers were tourists, and didn't have a clue about much, such as not stopping after getting off the escalator.
Oh, and Fremont Street is amazing. I liked it much better than the strip. If I go back, I'll spend more time in Old Vegas.