I spent the whole evening and night in them, and She had me running (well awkwardly shuffling) back and forth between the kitchen and the bedroom - fetching snacks and drinks, taking the dishes back and washing them/putting them away. For a couple of tasks (including baking and icing a cake) it was completely impossible so I had to beg to have one wrist uncuffed but the other wrist and my ankles remained connected. And naturally the moment I no longer needed that hand free, it was cuffed right back together with the other one.
Bedtime came around, and I washed and massaged Her feet in my chains, and then I clambered into bed and slept in my chains.
It was great, I stayed chained all night until about 9am Saturday morning when Mistress woke up and let me out. It works really well because although they are heavy and restrictive, I'm still able to get around and serve in most of the ways I would be able to when not chained (albeit much more slowly), so I get my bondage fix and Mistress doesn't have to do without Her slave.
