Eh, this one was actually pretty enjoyable if you can shrug off the initial barrage of toilet humor. That said, it wasn't exactly an outstanding, or even good, episode quality-wise; there wasn't really a moral to this one (although they tried to shoehorn one in), it just felt more like a filler/excuse to make an obligatory Christmas-themed episode for American [and more generally Western] audiences. Christianity is very widespread across Africa, but nobody over there is really singing "Winter Wonderland" or "Jingle Bells" come December unless they watch American TV, and even then they have little reason to; snow isn't really a thing in the human-inhabited regions of the continent, and in the few places where there is overlap, the local people generally aren't Christian and the snow comes down during the June-August period, so...

The Halloween-ish episode was a lot more effective in shoehorning American cultural holiday traditions into an African context, and as I said when that one came out, Africans across the board don't celebrate Halloween, and very few people actually want to.
Watching the Guard playing in the snow was actually pretty enjoyable - particularly Fuli - and the ending was genuinely funny (if illogical for obvious reasons), but I don't think the song was all that memorable; it was actually on the brink of being forgettable, truth be told. Once the catchphrase was dropped the first time, I could sense that there was going to be a song about it and I wasn't going to like it all that much. I don't even remember what it sounded like, and I just finished watching the episode barely twenty minutes ago.
The two gorilla princes felt like throwaway characters, and I'm not too big a fan of the casting choices made there.* I guess it worked insofar as them being goofballs, but that's about it. I did like their father though, in part because King Sokwe is now [only] the second character in-universe to have something of an African accent (even though his voice actor, John Rhys-Davis, is Welsh), but also because of the idea of the Pride Lands having to maintain diplomatic relations with foreign kingdoms. That the Pride Lands had to broker a peace treaty with Sokwe's kingdom makes me wonder if they've ever been in conflict with one another. (A nitpick; Bunga is the first character to actually say "gorilla", even though the Guard explicitly didn't know what gorillas are and neither of the gorilla characters introduced themselves as gorillas...)
*Side thought on casting decisions for this series: The proliferation of English and English-derived accents throughout
The Lion Guard really has a soft colonialist vibe at this point, as if this is like British Africa or something. I also find it odd that the characters throughout the entire film franchise speak Swahili (or at least are implied to know it enough to use it in casual conversation; i.e. their greetings, catchphrases, and of course their names) but whenever someone introduces a new phrase they have to ask what the phrase itself means. I know it's for the non-Swahili-speaking audience's sake, but the lines could easily be written to have just asked about the speaker's intent while still ultimately translating the phrase itself through song or some other context clue. (Most of the phrases have ended up being elaborated on in songs anyway.) Now I'm really hoping that the 'live action' remake has an entirely African voice cast...
Maybe it's simply because we've never actually seen the landscape from various angles on Pride Rock, but am I the only one who found it a little jarring that there's a huge mountain range out of nowhere? (The same could be said regarding Mbali Fields, but at least that fits the savannah landscape.) Given the whole bit about the Rwenzori Mountain range and the flurry of activity over where this is located, it was actually a little disappointing to see that sort of thrown away and just be like
Yeah, the mountain range is right over there.... I don't know, it just sort of smells of the Western tendency to just lump Africa into one relatively small geographic location, and it makes the story's universe itself seem a lot smaller. For what it's worth, at least we kind of know where the okapis and leopards - specifically Ajabu and Makucha, respectively - likely came from in-universe; the habitats are pretty similar, even though okapi at least don't really have a range that extends into the real-world Rwenzori area, at least not anymore. I actually thought Makucha would show up mid-episode to provide the story's danger element, but it was just a boar.
Ending my initial reactionary review on a positive note, I really like the colors of the last scene; very beautiful and a nice contrast to the dramatic fiery red sunsets we're used to seeing.