Hi
Def feed her upon taking off and landing during the flight to help with her ear pressure - there's info on travelling with infants at
www.ebabycentre.com/bdtravel.htmI'm not sure about mosquitoes though! Do you have an insect shade to put around her pram, that's what we have for our daughter and use in the summer to keep mosquitoes and flies away from her.
Enjoy your holiday!