Hammer, thanks for the info on SD cycling! Sounds like there'll be plenty of ways for me to get my cycling fix when we're there.

We're planning this trip for a reunion with DH's old navy buddies. Apparently Sioux Falls is roughly equidistant from the homes of most of the folks who plan to attend, though I think they're just saying Sioux Falls provisionally and they're really thinking it'll be somewhere in southern South Dakota. They're looking for a kind of campground that offers both camp sites (tent or RV) and cabins, so wherever such an animal can be found is probably where we'll go.