Saturnalia trees are probably a myth.
The first references we have to Christmas trees are in 16th century Germany. They probably didn’t come directly from any pagan traditions seeing as Germany had been Christian for multiple centuries at that point.
There’s a pretty good Wikipedia article on it
As mentioned, it’s the Jordan River to the Mediterranean. It’s been used by Palestians since at least the mid 60s in a number of different chants, e.g. “from the river to the sea Palestine will be free/Arab/Islamic” (technically, the latter two are “from the water to the water” because otherwise the Arabic doesn’t rhyme).
Hamas’s charter says
Hamas rejects any alternative to the full and complete liberation of Palestine, from the river to the sea
While Netanyahu’s far-right Likud party’s 1977 manifesto says
between the Sea and the Jordan there will only be Israeli sovereignty
It’s historically been somewhat controversial, with Zionists typically saying that it calls for the destruction of the state of Israel and/or the expulsion of Jews from the area. CNN fired a political commentator for saying it ~5 years back, and it’s regulated as hate speech in some places in Europe. Most pro Palestinian activists think that’s ridiculous, but it’s worth being aware of.
That sounds a bit more like a nightclub.
I’d never want to live next to a nightclub, but living next to a tavern or pub would be fine.