What it is: small-town festival, with a Danish twist.
As you may already know if you've searched the town on google, Solvang was established in 1911 by Midwestern Danish farmers who moved here to start a community, which would highlight their Danish heritage. A college was started here, and over the next several decades, the community grew around it. While Atterdag College is gone, the community survives it, and takes full advantage of its Danish heritage with lots of windmills, farmhouses built in Danish style, and costumed characters throughout.
Danish Days takes that to the extreme, with a horse-drawn carriage carrying the towns chorus group, a traditional breakfast of aeblskiver and sausage, Danish dancing . . . the whole works. The town square also hosts several shows, including a comedy/juggling team, a band, singing, and more, with carnival-style booths surrounding it. It's an enjoyable time, especially if you have kids, who will definitely get a kick out of the over-the-top Viking-associated activities and souvenirs. Hans Christian Andersen was walking around handing out stuff and telling stories.
What it isn't: Denmark
Not that it wants to be, either, so I don't think it’s a criticism by any means. It’s also not as educational as one would expect, although they make an attempt at this by having a video of Denmark and Danish history available for continuous viewing. While the kids will have a great time, it’s a bit thin on adult-level enjoyment, and beyond eating and looking around, there's not much for adults really to do. The entire time would make for a very enjoyable afternoon or entire day, but unless you know someone there or are involved in the festival, there's probably no reason to make an entire weekend of the festival itself. We had planned on going to the festival in the morning and having a wine-tasting trip in the afternoon, which I think worked out well for us, enjoying both without getting too much of either.
Bottom Line: It's fun, definitely something new, and very enjoyable for kids especially. It's not enough to carry an entire weekend, though.