I am taking my son out of school this year for two weeks for our wedding / "familymoon"
Luckily, he is not in compulsory education yet,(he'll be nearly4) but if he were, then i would still be taking him out.
I totally believe that he will learn a LOT on this trip - even though it is to Diosney worls (yes, we are getting married there too) I am happy to spend time with him, so he can learn useful social concepts like a wedding, and guests, and social behaviours etc. Also, he will learn about air travel and currency. We will spend time in the world showcase too. He also has to learn such things as "DO NOT put your hand into bushes / plant life if you can't clearly see where it will end up, as there is a good possibility of snakes". He will also see much indiginous, and otherwise, wildlife.
he also has ASD, and the time will in invaluable in learning to manage (for him and us) his hypersensitivities, and his other issues, in an intense environment.
As long as there are genuine educational advantages I have no problem in tkaing my child out of school to make a family trip.
of course, if, due to his issues, (or for any other reason) he struggles with this on his return, then I would be much less likely to do it again.
I would, however, be happy to put in time to help him not fall behind becasue of it.