V.B.
My hubby and I went to Ireland this summer for 9 days and left our daughter with my mom. She was 19 months old and she did just fine. And, actually, the hardest part for me was getting to the airport, but once we were on our way, I did fine. I think it's a great opportunity. The only reason we wouldn't have done it at that age was because I was nursing and it just wouldn't have worked, but if it weren't for that, then I almost think it would have been better when she was younger. Their concept of time is pretty non-existent at that point, so they don't realize how long you've been gone.
I definitely think you should go! Have a great time!