Once again, I'm not challenging your decisions but just throwing out info that you might not be aware of.
Even with potatoes, you don't have to dig. I'm quite new to veg gardening so don't want to present myself as some kind of expert - just sharing what I've learned along the way. Others here can give you more detailed info.
There are all sorts of options - the right one would depend upon your climate. For example, you can just place potatoes on the surface of a lawn then cover them with straw. That would be problematic in my climate due to abundance of slugs. But there may well be a much easier method that would be ideal for you.
There's a type of potato called Sarpo Mira that's bullet proof - resistant to blight, slugs, drought - everything. I'm growing them in a new bed this year. That bed is currently lawn with hard, compacted clay under it. My plan is to just place the seed potatoes on the lawn and cover them with compost, manure and grass clippings through the summer season. Based upon experiences thus far I fully expect it to work. This type of potato is very good at supressing weeds etc. By next season the bed will be good to go for something else.
Here's one example - with results. I'm not saying this will be ideal for you, but just want to make sure you're aware that there are options that don't require digging.
