Yes, it was interesting... some of it was rather obvious, of course, like dressing smartly, making sure you arrive on time, that sort of thing... but there was also quite a lot I'd never really considered... like ways to interpret what the advertisement is really asking for, reading between the lines... and a section which lists some of the harder questions they tend to ask you, with effective answers you can give.
Invaluable, I'd say... certainly helps prevent you making some of the more embarrassing mistakes. It gives you a kind of timescale to follow through. For example, they stress that you need to get publicity up and running a good six months before you want to stage the event. And get your main speakers booked earlier than that. They say you must make sure you've got a good assistant to support you, check the details.