Thanks everyone for your replies. We were really hoping for a nice relaxing break - as we all know is much deserved by mums and dads alike!

Well DH and I discussed it and we have both agreed that we think its safe enough.
Apparently Vanuatu is a malaria risk but I am hoping because it will be their "Winter" the mozzies won't be as bad. I have also found a great port-a-cot, its a Phil and Ted Travel Cot and it is completely sealed so we can zip him in and no mozzies will get to him (hopefully!)

Unfortunately Meow DS will be on Formula at that stage I am breastfeeding him at the moment but am weaning him at 5 months onto Formula so that I can go back to work at 6 months and have decided not to express at work.

I really appreciate everyones opinions and advice