I wouldn't say it's playfully written but it's written to a different sort of audience. I don't understand half of it either but my wife understands all of the fancy food words, so I get translations. Reviewing it again, I'd call it fancifully written. I'd rather it just be in simple language but *shrug* damn the food is good. I can't wait to be there again. Luminae is one of my happy places. Along with relaxing (and often falling asleep) on the T-pool bubble loungers.
One way you could approach this is to review the Luminae menus available online before going, and get a definition from Google for any terms you don't understand. Putting in "define bucatini" or "define hamachi" will get you a good idea what you'd be getting pretty quick. Beyond that, the waitstaff know the menu well so ask questions about how things are served etc.
Portions are not large, which might suit light eaters but we usually order extra entrees to share or doubles if we know we like something. Remember you'll have 3-6 courses depending how you order.
If you like wine or related after-dinner beverages it pays to get friendly with the sommelier. One thing that has made a difference between an average cruise and an outstanding one for us is the enthusiasm of the Luminae sommelier. When they more-or-less call it in it's not great but an engaged sommelier is worth their weight in gold, maybe more.