I can totally understand your anxiety about leaving your little ones behind, it would cause me stress too! I'm sure they are going to be looked after well while on your trip :) and it would be a nice break for you too I'm sure. I wouldn't worry about flying, I think its the safest way to travel, and the odds if anything happening are pretty much nil. If you are that nervous could you perhaps take a benzo prior to fliying? That would help you out, make the flight more relaxing for you!! I'm sure you will be just fine, enjoy your trip!!