I was away from DS (at about 18 months) but he was with DH and my parents. It was easier than I thought on my side although I did miss him a lot. I think it was helped by the fact that I didn't really have a choice in us being apart (why may differ for you if you are going on holiday) On his side he seemed fine but was rather clingy for a while afterwards. Being with people he was very close to obviously helped him and I haven't noticed any reduction in how close we are attached to one another (but of course some things may have effects that aren't noticed till later or may not be attributed to the original cause). He was unsettled for about a week afterwards but was also sick with a blocked nose etc so hard to know what it was from. He settled back down quickly once we were home again. Not sure I could do 2 weeks though. HTH