Well, as far as I'm concerned, you'll get treated just the same, a FULL briefing on the aircraft and Ex 4.1 (effects of controls).
Far too much on a first lesson, which is not Ex 4 but Ex 1 - 3.
You are trying to sell the idea to a customer that learning to fly is simple and fun, the time to do extensive briefings comes later.
Everything needs to be kept simple and short on the first lesson. Our briefings covers the area we will be flying in, the weather and a simple explanation of the aircraft and syllabus and advice on text books to buy.