Flying with 1 year old daughter

Hello This Friday I am travelling with my 1 year old daughter to walt Disney world in Florida with virgin Atlantic from Manchester. We have the following stroller:
https://mymomstore.co.uk/mothercare-xpe ... l-edition/
Will we be able to use it all the way to the gate and from the gate in Orlando? Will it be to big to gate check and get put in the hold for free? Will virgin Atlantic have bags at the gate to put the stroller in?
https://mymomstore.co.uk/mothercare-xpe ... l-edition/
Will we be able to use it all the way to the gate and from the gate in Orlando? Will it be to big to gate check and get put in the hold for free? Will virgin Atlantic have bags at the gate to put the stroller in?