Any reason they can't be installed trivially?
>An 'extra hour' is a very long time for someone to wait and I would be surprised if anyone would want to be stuck without access to one for that period of time.
How's that different from most long-way (Greyhound etc) bus rides with lots of hours (3-4) between stops? Don't know about how's that in the US in particular, but had such in most of Europe, Asia etc, and people are perfectly capable of "holding it".