Mohegan Sun sprouted up on the Mohegan reservation not too long after Foxwoods opened down the road. When I first went there (as part of a promotions crew from my then radio station of employment), it was just one casino and a food court. Now, not even 10 years later, Mohegan Sun is almost a village unto itself. There are two casinos, the original Casino of the Earth and the newer Casino of the Sky. Both are primarily filled with slots, but there are all sorts of table games as well. I find the Sky more attractive, as it is lighter and feels more spacious. The roof actually has a planetarium dome above the Wombi Rock martini bar, but it’s visible from the casino floor as well. The Earth casino has free concerts on the Wolf Den stage, with the occasional big-name act (for instance, Chubby Checkers and Greg Allman are both expected to perform there soon, in January '05).
The shops are pretty good, and OdySea has a large aquarium with live sharks swimming around! There are stores, like a record and bookstore, "Nostalgia," and a Discovery Channel store, all of which should fascinate kids and maybe some adults. Also for kids, there is a playroom and arcade, so kids can have fun while parents play elsewhere.
There are a number of restaurants to satisfy about every budget and taste bud. My favorites are the Summer Shack (seafood) and Bubba's BBQ, both fairly priced.
The hotel tower doesn't have any rooms as cheap as the Two Trees Inn at Foxwoods, but the Mohegan Sun hotel is more luxurious and pampering. If you aren't trying to live on a budget, then this hotel is great.
The arena holds some of the bigger concerts, and I had the opportunity to see Simon and Garfunkel here this past summer. For an arena-sized venue, it's a pretty good place. It also is the home of the Connecticut Sun WNBA basketball team. Mohegan Sun offers much for everyone, big gamers or not.