I'm one of those women who need to stop and use the restroom about once an hour, particularly in the mornings. Thankfully, my husband has reached that "age" when he needs to stop also, so he doesn't complain anymore.
Here in the States, I keep an eye out for highway rest areas, fast food restaurants and/or grocery stores, which all have public restrooms. At the stores we usually buy something so we don't feel guilty.
What are our options when out in the Irish countryside? How frequently can we find public restrooms? Anything specific to watch for?