In my eyes definitiv LAS VEGAS!
I have traveled around many cities, but this is the one where you will have the most fun!
If you like to dance and party: vegas offers many clubs - bars - discotheque - and the best: pool partys :-) all day and night long.
If you like to food: many food courts will be ok your way, with different styles of food.
If you like to go out and do some shopping? here we go 2 mega outlets centers, will help you out. One in north , one in south.
It just try one of the countless shows - with acrobatics or magic, or with girls.
Or just go out and have some fun with gambling ( play some poker , roulette or slot machine)
You will find your fun entertainment there ;-)
Been there over 5 times and never disappointed ✌️