As close as I can get to the 1000 Cranes cocktail.
2 oz of a mix containing Ichiko Saiten that had sliced cucumber sitting in it for 4 hours, some Midori, some Mastica, some St. Germain.
3/4 oz lime juice (had no lemons)
One teaspoon lime leaf simple (complicated?) syrup
One teaspoon orange syrup.
Shaken, topped with fever tree yuzu lime soda.
Easy here (Florida) and the dwarf trees can grow in a pot so even if you are somewhere cold it's possible. Main problem in Florida is diseases - trees to grow here must come from nearby and be clean of citrus greening.
My lime tree made it 2 years in a pot before I planted it into the ground. Used "citrus spikes" to fertilize it, it did make plenty of fruit in season.
I would say easy compared to most fruit trees.
Learning to make super juice helps too - if you are having a party you can just leave that out and it tastes fresh all night.