SkyMatters: Looks like acid rain, dear — if you're having Christmas on Venus

The atmospheric pressure on the surface of Venus is 92 times greater than Earth’s, crushing even the most robust presents, leaving us to conclude that only the magic of Santa Claus could save Christmas on this planet.
Santa has a lot to consider at this time of year. Flitting across the rooftops from town to town, country to country and continent to continent is no mean feat, especially as it all has to be done in one night.
But what if Santa had to do this on other planets as well? What extra challenges would he, his trusty reindeers and his present-packed sleigh face?