That is a great looking box.
I agree with Potz. That wine won't be drinkable; probably even in 10 years. For wine to last longer it takes a special vintage and very careful temperature and humidity controlled storage. I suggest you replace the wine with a good Scotch or Whiskey that will last that long.........even if it is opened just for a sip every 10 years.
An after thought. If the lucky couple last long enough the box could be used to hold their ashes...together...for ever.