Yes, all the seasonal events are short. You can easily finish each of them in a day or two.
For those of us who have alts and/or don't play FFXIV every day this is actually very nice - it means I do not have to spend all my time grinding the event to get all the stuff.

In some other games I play (Lord of the Rings Online, Secret World Legends) you have to repeat quests many times to be able to get all the seasonal items. It easily becomes a grind, and it can be nice to get a break from the grinding.