Fremont is a blast. You can't beat it at night. The Viva Vision is spectacular. There is also a zip line that you can zip over or under the Viva Vision.
Should you decide to stay at the 4 Queens, request a room under the canopy. Then you can watch the Viva Vision and the crowds. Very entertaining.
The smaller casinos, like the Mermaids, have several cocktail waitresses so the drinks come faster.
Upstairs at The D, they have Vintage Vegas gaming. Coin in, coin out slot machines.
Main Street Station buffet is wonderful. Nice variety and not pricey. You can get a list of the artifacts at Main Street Station, like the Stained Glass window was from where ever and the piece of the Berlin wall I believe is in the upstairs men's room. Very beautiful woodwork and brass throughout.