Help me decide on which car seat to take

[WeeClype]

DD 6 months old.....I'm going on holiday next month with 4DC's so we have a lot of baggage to carry as it is!

Do I take my DD's infant carrier or her big car seat? Bearing in mind I'm already taking my 2 yr olds big car seat.

The infant carrier will be easier at the airport but a total pain strapping it in whenever we use the car, which will be daily.

The big car seat will be a pain to carry in the airport (Qing to check in then Qing to put the car seats away) but once it's in the car it's in.

Can you get a car seat bag and fir the in fact carrier sort of inside the 2yo's car seat, so you have one awkward bag rather than 2 seats? I have done this with booster cushions inside the big seat inside the bag.

As above really. Oh and assuming your car seats are legal at your destination.