153.4 miles from Vegas to Havasu. You can get to the chanel but you must have a boat to get to the Sand Bar and everywhere else. There is still a pretty good show in the chanel below the London Bridge but not as wild as the Sand Bar.
I will be on Lake Mead that weekend or I would let you jump in with me.
I just remembered that they are still closing the Sand Bar and Copper Canyon on Memorial Day Weekend. So you won't be missing that spot.