One thing I've found, is that people tend to memorize things in one specific order. In theatre, in rote memorization, in the way they drive to someone's house. The idea is not to just deliver that speech to each table. As a waiter myself, at
Pappas Seafood House, I have to give a solid "full presentation," but I try to alter the presentation a little for each table. The key to that is knowing not only the entire presentation itself, but each element (regardless of its overall position) in and of itself. So what you need to do is memorize it in chunks to begin with. Then memorize the order of the chunks, assigning each chunk either a number, letter or object. Once you can get through the complete presentation without verbal pauses, mental lapses, or mistakes, move on. Then take the objects out of order and memorize them. The problem with memorizing things in only one order lies in the fact that if you get distracted or wander off script, you lose your place completely. The best presentation is one that can smoothly and flawlessly return to its track without batting an eyelash.