So if you are in Europe, and don't mind budget-friendly travels, use Easy Jet: it's all good unless your child gets air sick. They do not help in such situations, but then most airlines have the same answers: We don't have cotton balls or we don't keep candy. If your child, like Niyati gets ear pain, ask her to keep swallowing or press his/her ears.
My dearest was fine during departure, as she slept through the flight...however, during arrival, she was quite uncomfortable and teary.
What to Expect in Barcelona
If you're traveling from Switzerland, expect enormous joy almost instantaneously. If you're traveling from India, what else are you going to feel but joy? Maybe a bit of a jet lag too! It's warm(er), the sun is out and the locals are friendly. The official language is Catalan (not Spanish you dummy), however a lot of people speak English. The Euro is what works, comes under the Schengen visa, and most of the places accept cards. But be sure to carry cash, especially for the cabs and the quick bites.