Las Vegas. It has everything you could possibly want. Take a Italian gondola ride, walk through New York City. Volcanoes, dancing fountains, wild life, wild animals, not human ones, but there are some wild human ones..
Seriously, if you do not gamble, you don't have to. You can go touristing, there are museums, a candy factory[Mars], go to shows, see the sites, shop until you drop,and never put so much as a penny in a slot machine.
I like the atmoshere. Everyone has a theme, it is fun to see a Roman Gladiator standing attention, or watch some show girls pose for a picture. There is everything from g-rated entertainment, to nekked showgirls. The MGM GRAND hAD a show that had a volcano, a sinking titanic, an orangatan that was "naughty, and oh yeah, a room full of topless show girls.
Other places I loved that are suitable for a honeymoon would be Yellowstone park, San Francisco, Niagra Falls, the Wisconson Dells. SOME NOt so suitable, but very entertaining would be Washington DC, guaranteed to keep you busy for several days. Pick a smaller city, like St. Louis, see the gateway arch, forest Park, the Science Center, the Zoo, Budwieser brewery, and on and on. Go to the Muny opera. Chicago has some nice lake front views, museums, and aquarium, shopping, and tourist attractions like the Ferris Wheel and the Fountain. You will eat good in Chicago, there is a restaurant representing just about every culture on earth. we ate in a Hungarian restaurant.