Kes,
My Vegas plans are a mess this year. I normally go the 4th week, but I won't be making that trip this year. So that leaves either before or after that date. I know, it doesn't help much with your planning! I haven't been to Vegas since November, and this is the longest stretch I've gone without a trip in many years.
Pick your own time, and I'll see if I can match up something. We got a bunch of other social stuff on our calendar this year.
BTW, I had planned a late april trip, that is in the toilet because of taxes!