I mean what more can you really say about the "Welcome to Las Vegas" sign then... you have to come here and take a picture in front of it while visiting Las Vegas.
I come here a lot, only because when my family and friends visit Las Vegas, everyone needs a photo for social media lol
Something's I've noticed is, you want to come around 5ish cause that's the best lighting. Also, parking is limited so plan ahead and don't forger to take a picture with the back side of the sign.
Normally they have a random guy that acts like he works there and helps take photos for people and most of the time an Elvis look alike.
It is pretty hot standing in lane for your time to take a photo so make sure you bring water (better yet and umbrella) for shade cause there's no shade at all.
Enjoy!