Okoboji would be fun...expensive, lots to do, super busy lakes, but fun.
My only thought was that Emmetsburg would potentially be more welcoming to us since we'd be 'News'...Casino has a nice RV park, but the campground is essentially a city park...so not necessarily great there.
2 years with terrible bathrooms at a State Park and I've about had it, and who puts a campgound on a hill and doesn't level at least a tent spot (Iowans...that's who)...the other option is a Corps park at Rathbun...but Rathbun is a haul for anyone not in the Southern 1/2 of Iowa.
Anyway, I'm willing to check it out if people are interested.
I will say this, Thursday & Friday were amazing 'on the water' days...even if it took 200 yards for me to get on plane and I could only cruise at 28 mph...still great days. (DNR left us alone too...well, except for the helicopter buzzing Travis.)
Now...about the Amberg's...