I'd do it a little different too. We holiday in the US every two years and Las Vegas was (pre-DS) our must do everytrip destination. BUT you either love it or hate it. We are not big gamblers but there is so much else to do I don't think it's worth doing for any less than 5 nights. So many shows to see, casinos to just walk through, great places to eat, exhibits to go through and just walking up and down the strip. If you need any advice on where hotels etc. are located feel free to PM me as it's such a loooooong strip and some hotels aren't worth staying at if you don't have transport. Also happy, happy, happy to answer any of your other Las Vegas questions although we are not club people so can't help in that area.

Oh yeah - We didn't enjoy LA at all so 3 full days for Disneyland and California Adventure park would be perfect. Also Universal studios is another option too.

Hawaii - if you are just staying in Waikiki 3 nights would be fine. If you are going to Maui etc. you would need more nights.

Have fun planning your trip.