Why didn't I known about Chris sooner? Super easy to use website, book any clubs in advanced and on the day of the event, they will text/email you with instructions on how to get into the parties you reserved for. We used his service 2 nights in a row in Vegas and both times, we were able to get into the clubs without any trouble. When you get in line, just tell them which guestlist you're on, and you're in! Ladies, you even get a free drink.
There is no guessing where you need to be or at what time. They are great at communication and always make sure everything goes smoothly. You will get a text from them a couple days before and on the day of. If you have any problems at all, you can call/text them and they will reply right away.
Nice final touch on the suggestion to donating to your favorite charity from the money you saved from using their services. Love it!