Don’t think you need to gamble to enjoy Las Vegas – but over 21s should all walk around some of the mega casinos to watch everyone else. The people-watching is incredible – from the old ladies at the slot machines to the high rollers playing roulette and poker. Some of the tables with the really high limits are in private areas, but you can often stand nearby and watch from a distance. It’s some of the best free entertainment around. Of course if you do want to gamble you’ll have and endless choice of casinos. Drinks can be free while you’re playing and many hotels offer card classes to beginners – ask at reception for details.