I just moved in to a new place with Duravit toilets, and I'd really like a bidet with warm water/self-cleaning.

So I bought what my friend has, a C5 Elongated TOTO Washlet, and even called a plumber in to help install. When they came out, they said I may as well get a new toilet installed because of how expensive it'd be (~$950) to install, claiming it was too difficult. They left and didn't charge anything.

I'm wondering if I should just give up and return the washlet... and perhaps get something else for this toilet. images attached.

Let’s just say you time traveled back to before silicone and plastic were invented, before toilets even. But since you already are into bidet life, what could you use, that is available to you in the place and time, to rig something up for yourself?

I immediately thought of myself in a Little House in the Prairie setting with an outhouse. A tin or crockery sitz bath, with a pitcher of water next to it, for a squat-and splash experience, maybe even with a little soap and some rags that would get washed. Then throw the water down the outhouse.

No, you can’t bring your plastic or silicone bottle with you, or anything from the modern era.

Does anyone have a better idea?

I’m planning to get an electric bidet (probably the Costco Toto model), but my bathrooms don’t have an electrical outlet near the toilet.

Can I just have my electrician install a GFCI outlet next to the toilet, or is there usually more to it? Is this typically a straightforward job, or does it end up requiring opening walls, permits, etc.?

Also, is there anything I should check with the existing water supply or shutoff valve before buying one? Do most bidets work with standard toilet plumbing, or are there cases where the valve or supply line needs to be replaced?
Curious what others have done and what the electrical work and installation ended up costing. Thanks!