Ok, started re-reading, as I promised.
I'm sorry you didn't like your first plane experience. Unfortunately, I can tell you it's pretty much standard for planes to 1. having no leg room and being cramped, and 2. have not so good food. At least count yourself lucky that coming from the UK you actually get a meal, instead of just a drink for us. I remember the goold ol' days when travelling with my brother to visit my grandparents in Florida over 20 years ago. We had a full hot meal, and a nice chocolate heart (it was close to Valentine's day).
Magic Kingdom really is the best place to immerse yourself in the magic.
I'm sorry, but I'm with your dad. Gotta go on It's a Small World. It's a classic! Awww, memories of my childhood.
I'm sorry you got separated from your family. When doing such a thing, it's very important to set up a meeting time and place. Heck, even in the local mall it's always good to know when and where to meet up again, let alone in a big and unknown place such as WDW. Take it as a life lesson.
At least you got to go on some fun rides.