A calendar invitation is on its way. Before the call we will read your public pages, so the thirty minutes is about your site rather than about our product.
Thirty minutes. A solutions engineer and your account lead. A written scorecard afterwards either way.
If there is a query that fails on your current site, bring it. Watching it work is more convincing than anything we would say about it.
Optional
IT, or whoever will ask the security question. It is better asked on the first call than discovered on the fourth.
Recommended
No data export, no access, no preparation. We have what we need.
Required