Probably the best place in Vegas you can go to for alcoholic slurpees. The amount of shots they put in their slurpees is very generous. I ordered a 100z Bottle with 5 extra shots and it was enough to get me buzzed throughout the whole day by the time I finished 3/4 of it. This place is a must go for someone who just turned 21 or for someone who's looking for a tastier alternative to alcohol.
I recommend getting a 100oz or one size smaller and sharing it with someone because it is well worth the price, especially if you're looking for a refill. Extra shots are worth $1 each which in my opinion is a steal since you will probably pay around 8 bucks for one shot around Vegas in some random bar.
Just note that a 100z bottle is plastic and heavy. It may not seem heavy when you first hold it but when you carry it throughout the day on the strip, it really gets to you. Also you can break the bottle easily by dropping it since I dropped mine and broke the bottom of the bottle.