Two of my favorite places in Vegas. Happy to be your 'escort' and concierge for your trip.
Mt. Charleston is fun in winter and summer. I have skied there and also been on motorbike trips up there in summer. And Lake Mead is my all time favorite place to be in summer! I even have a friend with a boat who would love to take us out there (he likes to watch) or I can organize a little 'swing' fest on the Lake too - that would be fun!!!

I will attach a photo taken at Lake Mead last summer and if I can find the one from Mt. Charleston will post that too...