Summarizing the first day of holiday event
Alright, today I walked 12 km and hatched a total of 25-30 eggs. It seems that we really have greater chances to hatch babies; except for 1 elekid, the rest was hatched today, so it's 1 baby every about 7 eggs, and considering that we have not many possibilities to find what we're looking for in the pool of 2,5 and 10km eggs, it's seems a good number. Do you agree with me? How many babies you found?
This is what I will first hatch tomorrow http://imgur.com/a/gTSln
Note that all incubators are from coins that I take from gyms, I calculated that in the period of the event, I will be able to buy 5 more special packs, so if all continues this way, I'm hoping to find all the babies before the end of the holidays.

Answers
Hatched 8 eggs here, 0 babies, 2 of them 2k, 6 5k, I think my bad luck will continue tomorrow...I have 2 10k in process but if I don't get a baby my guess is just a pinsir, jynx or electabuzz, the normal useless stuff.
The most funny is that I already had cleffa and iglybuff before the event using just the infinite incubator, and now that I have bought like 6 special boxes I won't get any for sure...