I did ours about a year ago - almost exactly a year. :) No chipping. I haven't reapplied the wax at all. They've been easy to keep clean - I was worried about that, with the light color we chose, but it's been fine.
Annie Sloan says the wax needs to cure for a few weeks - so we were gentle for the first few weeks. After that, normal use (and I'm pretty sure the kids were only gentle for the first day or so!).
Oh, actually, I have one area that I didn't wax - the inside of a cabinet door, over our kitchen craft area. Where it hits the cabinet box, when closed, has chipped a tiny bit. But I don't often notice it, due to the location. I just missed that inner door when waxing, and don't care enough to pull out the wax and do it! To be fair, that's the cabinet that sees the roughest kid-use (it's where we keep craft supplies). The waxed inner doors never had this issue, so I'm chalking it up to the lack of wax. (Bad pun!)