It did take some time, long past closing time, before they woke up. (Madara first, Itachi... Quite a while later.) The attendant stayed with them, even though it meant getting hime late. There was a stern warning to not take any trips to the onsen for the next few days, especially for Itachi, as his temperature regulated itself again. But there was still no blame.

"Easy now..." The attendant helped Itachi sit up while the medic looked him over. "Almost gave yourself heatstroke there. If you're going to fall asleep like that, do it on a pallet upstairs."