Hi Liquid Man,
I work at a top members club and we really capitalise on the ‘after dinner moment’ and find that the trolley really ads to the experience and people tend to all order something since you've gone to the effort of bringing it out and also, out of intrigue. I think this experience can be replicated in a less formal way in your restaurant, no doubt. Instead of a shiny, black slick trolley, you could go for a more understated wooden one that's less imposing and scary. I'd advise calling one of your suppliers and see if they could supply you with one in return for you pushing their brands on it – then everyone's a winner! Let me know how you get on!