just got back from a week in Vegas myself... took Allegiant airlines, they're not bad at all.
But, they did get into my duffel bag and steal my Bic lighter. They didn't inform me that it wasn't allowed anyhow on my way out of Wichita, KS. Then when I went to check in at the Vegas airport, they told me "no lighters or matches in your baggage, but you can carry matches onto the plane" odd, but ok....
Casinos are very insecure places. I've heard that in Nevada you can actually get a 4 hour class that allows you to concealed carry while you're in the state legally. Why do you want a knife anyway? Seriously...it's not as corrupt of a city as I originally thought... the whole place is like one very large bar.... well, the "strip" is...and if you're not going to visit family, then you'll spend 99% or more of your time on the strip.
Another thing...don't take a shuttle service to get from airport to hotel, or hotel to airport. Seriously, they're a pain in the neck...and they will make you wait. Your best bet is just to hail a cab and spend the extra couple bucks... seriously, it's $6 for a shuttle, or about $14 for a cab....and the shuttle operator went through my business partner's luggage when he threw it in the back of the bus. I know better, I only ever travel with a duffle bag or less. How many pairs of shoes does a man need anyhow?
You'll be fine with your benchmade...but remember you CAN'T lock your luggage, so don't put anything in there that's easy for anyone who handles luggage to steal... and they do run them through some sort of xray, or they would have never found my BIC.
Now, while in Vegas... here's your destination list to consider. Depending on what hotel your in (I suggest Imperial palace due to it's center of strip location and reasonable price) you'll want to check out Casino Royale for the drink specials (if you're not gambling) if you are into gambling, stop by the 25cent slots as soon as you get to your hotel. Just put $5 in the machine and wait for some free drinks.... Caesar's palace seems to be really good about that, and also the dive called "Bill's" has really good drink deals... like 50 cent draws (don't eat at their restaurant though)
Remember, you can drink alcohol freely on the streets in Vegas...so don't limit yourself to the casino's that give you free/cheap drinks.
Also, an important point... Vegas is a really neat city to just wander around in. Nothing is private (unless it's marked) so just walk through any and every building you can. Go where there are less people crowding the street and you'll find adventure for sure. Also notable...there's a nude pool just to the north of the "neptune" pool at ceaser's palace. You can get an incredible view from the second or third floor windows of ceaser palace's Roman Tower... which is, you guessed it, open to the public 24/7.
Oh, and avoid all those hispanics on the sidewalk handing out pornography with a phone number for a prostitute. I took it from the first one, thinking "hey a coupon for a free drink or something!" much to my amazement it was a pretty good looking topless girl with a phone number and a caption that said "girls delivered directly to your room. $39.99!"
Shocking adventure for a hayseed from KS. Probably not so much for the rest of yall.