I hear your hesitation! Never done anything like that before... Although when I have travelled it's the middle week where I am homesick more, so you might be surprised when your feelings fluctuate. It sounds like a great opportunity and I guess it depends on what you want to experience and what you want for your future. 3 weeks out of the kids lives will be hard, but it's doable. And maybe it's showing the kids to take chances and try new things even when they are hard.... It would be different if you did it all the time, but it's a once off event, that, as you say - you won't get the chance to do again.

I dont know whether I would go or not in your situation - but I can see the dilemma and sometimes I reckon the "not" comes from anxiety (or maybe guilt in a mummy's head) and I figure saying no to an opportunity because you are worried or anxious is not a great reason, but if you think it through and can't work out any ways to make it be "okay" and still feel reluctant, then don't go, but if you can work out a way to be "okay" with the negatives, then it sounds like an opportunity you can't say no to!