Start from the axis you are sleeping on
Umeda stay: Grand Front via the north link, without standing in the rain. Namba stay: straight up into Parks from Nankai. Tennoji stay: up into Harukas inside the station. Do not cross districts because of rain.
Ticketed indoor options
Kaiyukan is about 5–10 minutes from Osakako, with an open stretch — bring a cover. The history museum is at Tanimachi 4-chome and often closes Tuesday. Check that day's notice. Do not do both the same day.
What to cancel
Cancel Amerikamura, Horie, a castle-park loop and Minoh Falls in the rain. The Shinsaibashi arcade is covered — keep the middle. Do not move the cancelled sights into the evening.