However, with a 6 and a 5 year old, I pretty much can't think of a worse place to vacation. The hotels are smoky, crowded, expensive places. There isn't a lot of kid friendly entertainment or food, childcare is hard to come by in most of the hotels, and I just can't imagine you or your kids would have a good time. You and your husband are going to miss out on all of the fun options for adults, and your kids are going to be bored.
So I ask again, why Las Vegas with kids? If it were just the two of you'd, I'd be giving every recommendation I could; I just CANNOT recommend it with kids that young.
Disneyland/LA are just an extra 30 minute flight away. Or I'm sure there is something more kid friendly closer to you home. Please reconsider using your hard earned vacation money on something that the whole family will enjoy or if you're bound and determined to go to LV,
please leave your kids at home--trust me on this one!