V excited - DH and I have got a long weekend, without DS1 and DS2, planned in Chicago in October. Been at least 6 years since I had a childfree break so looking forward to lie ins, culture, meals out and not having to check if DS2 needs the loo every 10 minutes and listen to DS1's whinging about how he wants to go to the playground we saw several hours earlier 
So, any top tips on places to visit/things to do?