I've used Sin City Cupcakes a few times for bachelorette parties when my friends are in town. They're perfect for this type of celebration! The cupcakes are delicious (even days later) and serve as a great late night snack in the hotel room after a night of crazy. They taste just like their flavors with a hint of the alcohol-- which is perfect.
My favorite flavors are Better than Sex, Midnight Mystery, and Honey & Berry-Licious.
Their pricing is decent for the kind of gourmet they do (I ordered something similar in Vancouver BC and it cost way more). Decorations can be event appropriate and are very cute.
Their customer services is very responsive (usually within a day) although when I tried to order in June, two days ahead of when I needed them, I didn't hear anything back-- I'm guessing because I was too close to the day I needed them? Best part is that they deliver-- to any hotel, to your house in Summerlin or Henderson, etc.. Just make sure to time your order so you have it by when you need it.
I'll definitely be using them again for when my girlfriends are in town!