If you have young kids and you live in or are visiting Las Vegas, this is the place to go. There is so much to do and you can easily spend a good 3-4 hours and just let your kids go and have a ball. There are several floors and they have fantastic traveling exhibits from time to time. Recently they had the Magic School Bus. The only piece of advice that I give parents is that you should save the Water Works portion for the end of your trip. The kids will get soaked, but it is a great time. We are members and if you go at least 3 times a year the membership is worth it. They do have Bank of America customers free (only includes those with a BOA card with their name on it so you still have to pay for your kids) on the first Sunday of every month.