What makes a cookie banner readable for a non-technical client?
Plain language, two obvious choices, and no legal vocabulary. A banner your client could explain to their own customer in one sentence is a banner that actually protects them. If the client cannot tell what each button does, neither can their visitors.
Write the banner for the client's customer, not their lawyer
Most agency banners read like compliance documents because someone pasted in the policy text. Visitors do not read those; they click whatever dismisses the box fastest. Short sentences, everyday words, and one clear purpose per button do more for real consent than three paragraphs of definitions. The legal detail belongs in the policy page the banner links to.
Make the choices genuinely equal
Accept and reject should look the same: same size, same weight, same position logic. When one button glows and the other hides behind a grey link, visitors feel pushed, regulators notice, and the client's consent record gets weaker instead of stronger. Equal choices also make the client's analytics cleaner, because the opt-in rate means something.
Give the client a one-page explanation
Clients approve banners faster and defend them better when they get a plain-English summary: what the banner does, what each setting means, and what happens when a visitor says no. That page is also your paper trail when the client asks why the banner blocks their new chat widget. Agencies that hand over readable documentation get fewer panicked emails and keep the retainer longer.