Thanks for the tips tenar
Kozy is similar to the Ergo except with ties instead of clips, am really only taking the stroller as somewhere familiar for him to kip in during the day. My friend is picking us up from the airport and has two carseats which is great.
The disposable mats are an excellent idea! DS is in cloth, but i'll be using disposables on holiday as can't be bothered washing whilst i'm there
I'll check with the airline about the stroller, I definitely know I have to check it but am not sure whether it will count as "baggage" and will have to pay, as I have a carry on luggage only fare.
Thanks again