Well, I've lived here all my life and I don't like Tonga Toast.
The main thing to remember about food in the US is, there is a HUGE variety. If you like spicy, you'll find spicy. If you like sweet, it's here. If you like savory, cheesy, not cheesy, curried, baked, broiled or fried, it's here. You want it, you'll find it.
Some foods will taste different. Our baked beans are more flavorful and a touch sweeter than yours. Our bacon is streaky, our pancakes are puffy, and our portions are huge (at least, they are in Orlando restaurants). We tend to use more seasonings than the 'average' Brit, but for the most part you'll find foods you will enjoy. Perhaps you'll also find some things you wish you had back in the UK! I know I wish we had Flapjacks and good chocolate here.
I find most British food much less seasoned than what I'm used to, but it's great fun to try new things. If I can try Marmite (which makes sense as a base for soups or stews but is just plain ghastly on bread! ), you can try American food, right?
And if you need a taste of home, try Bob's Soccer World on I-Drive (across from Ripleys) or The George and Dragon next to Wet 'n Wild.