There's one room that has a tub available at my hospital.
Once your labor was well under way, would you call and head over there ASAP if this one room happened to be available? Or just stick to your original plan of laboring at home for as long as possible and get the luck of the draw once you're admitted (and hopefully don't have much longer until the second stage)?
The hospital is about 10 minutes away from our house. Just curious.