Hi! I live about 5 hours from Branson and cannot count the number of times I've visited there. Of course, relative to Disney, everything's inexpensive in Branson! (Just read the post preceding mine, so I guess not everyone agrees with that statement. But compared to WDW, Branson's not terribly expensive.) There is a nice, new shopping area downtown called Branson Landing. Other things are tours of Stone Hill Winery; mini golf; White Water water park; Ride the Ducks. The Shepherd of the Hills does an awesome outdoor play every evening and there is a guided tour of their historic grounds; there is an imax theater in town; you can stroll through the Grand Village shopping area, it's a nice relaxing spot with some interesting shops.
I would still recommend Silver Dollar City, unless you just don't want to spend the money. It is a completely different place than WDW. Of course it cannot compare to WDW, but it is a very nice park in its own right. SDC is very heavily themed toward a turn of the 20th century Ozarks town. Many attractions would be closer to 6 Flags level than WDW level, but there are some unique things on property. Marvel Cave is an awesome hour-long tour that's included with park admission. Most kids love it (and I do too).
Feel free to PM me with any questions. I'm having my gallbladder removed tomorrow, so may not respond immediately, but I'm on here constantly and imagine I'll spend a good deal of time surfing the DIS while I'm laying around over the weekend.
Hope you have a great time in the Ozark Mountain Country.