S.T.
no, but greece is hugely on my bucket list. my dh is less enthusiastic. maybe i'll go with you and your kids. they and i have much in common. :)
my brother lived there for a while. he says the traffic in athens is insane and horrifying. don't drive there- get a driver to take you to the places you want to go. be prepared for some to be an initial disappointment- my number #1 destination, eleusis, is apparently now engulfed in a nasty grubby industrial area. but the great temple grounds are still there, and i'm sure (i hope) still holy.
delphi has a lot of touristy trappings but has retained much of its awesomeness. oh, i can't wait. a friend of mine actually quietly ducked the tour crowds and spent an evening alone in the pythia's cave. life-changing.
and your kids will be able to touch the omphalos!
if you can swing it, getting a driver for the whole trip would probably be best, although expensive. but don't drive yourselves until you've finished with athens.
again, just passing on what i've gleaned from asking folks i know who've been.
i'm uber-jealous!
:) khairete
S.