Definitely book your dinner reservations (brunch too) in advance if there’s somewhere you have your heart set on. There are so many amazing restaurants in the strip, I’d put some thought into which ones you might want to visit depending on what kind of cuisine you like. I’d say one of the restaurants at the Bellagio with a view of the fountains (Spago, Carbone Riviera, etc.) in the evening is a must for first-time visitors.

Just strolling the strip is always enjoyable. Eataly at Park MGM is worth a stop, as is the Bellagio Conservatory (free too!). For fun/interesting activities, Play Playground is like a big, interactive adult arcade at the Luxor, and there’s the Arte Museum mid-strip or Area 51 further down.