Gummy travelled on the edge of the balloon basket... he could have easily fell down, with no pegasus to save him from a fall to an inevitable death. Wasn't Pinkie supposed to be a responsible pony after the Baby Cakes episode?

A big avalanche didn't kill any yak... fine, it's a kids' show after all. But the fact it didn't destroy huts is just unbelievable especially when we remember Pinkie touched one and made a hole in the wall...

There weren't too many yaks in the village... Were ponies seriously afraid of them in the past?

Prince Rutherford couldn't survive the whole winter in a hole entirely on his own because someone would need to bring him food. Yaks couldn't survive by eating snow for too long for the same reason.

Pinkie Pie would be great at making episode sin polls (that moment she pointed out what was wrong with Prince Rutherford's story).

If we assume that asking a question takes Pinkie 1 sec. on average, she'd need over 231 days to ask 20 million questions, so it's impossible for her to use them all up on the way back to Ponyville.

That's nice ponies actually used magic to remove the snow but how did they not wake yaks up!? Also shouldn't some yak be a nightwatchyak?

The moral of the story is: if a 3rd world country doesn't ask for help, the world should help them anyway and make everyone think it was all thanks to their almighty leader.

Another moral of the story: in order to understand another culture, imitate their accent, that will sure make you a honorary citizen of another country!